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171029472 = 25323292671
BaseRepresentation
bin10100011000110…
…11001111100000
3102220211012022220
422030123033200
5322240420342
624545431040
74144504125
oct1214331740
9386735286
10171029472
11885a5a79
124933b480
1329582a93
1418a0074c
15100355ec
hexa31b3e0

171029472 has 96 divisors (see below), whose sum is σ = 484807680. Its totient is φ = 52631040.

The previous prime is 171029407. The next prime is 171029473. The reversal of 171029472 is 274920171.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171029473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62697 + ... + 65367.

It is an arithmetic number, because the mean of its divisors is an integer number (5050080).

Almost surely, 2171029472 is an apocalyptic number.

171029472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 171029472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242403840).

171029472 is an abundant number, since it is smaller than the sum of its proper divisors (313778208).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

171029472 is a wasteful number, since it uses less digits than its factorization.

171029472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2736 (or 2728 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 33.

The square root of 171029472 is about 13077.8236721559. The cubic root of 171029472 is about 555.0817962390.

The spelling of 171029472 in words is "one hundred seventy-one million, twenty-nine thousand, four hundred seventy-two".

Divisors: 1 2 3 4 6 8 12 16 23 24 29 32 46 48 58 69 87 92 96 116 138 174 184 232 276 348 368 464 552 667 696 736 928 1104 1334 1392 2001 2208 2668 2671 2784 4002 5336 5342 8004 8013 10672 10684 16008 16026 21344 21368 32016 32052 42736 61433 64032 64104 77459 85472 122866 128208 154918 184299 232377 245732 256416 309836 368598 464754 491464 619672 737196 929508 982928 1239344 1474392 1781557 1859016 1965856 2478688 2948784 3563114 3718032 5344671 5897568 7126228 7436064 10689342 14252456 21378684 28504912 42757368 57009824 85514736 171029472