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157470 = 23529181
BaseRepresentation
bin100110011100011110
322000000020
4212130132
520014340
63213010
71224045
oct463436
9260006
10157470
11a8345
1277166
13568a1
144155c
15319d0
hex2671e

157470 has 32 divisors (see below), whose sum is σ = 393120. Its totient is φ = 40320.

The previous prime is 157457. The next prime is 157477. The reversal of 157470 is 74751.

Added to its reverse (74751) it gives a triangular number (232221 = T681).

It is a self number, because there is not a number n which added to its sum of digits gives 157470.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157477) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 780 + ... + 960.

It is an arithmetic number, because the mean of its divisors is an integer number (12285).

2157470 is an apocalyptic number.

157470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 157470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (196560).

157470 is an abundant number, since it is smaller than the sum of its proper divisors (235650).

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

157470 is a wasteful number, since it uses less digits than its factorization.

157470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220.

The product of its (nonzero) digits is 980, while the sum is 24.

The square root of 157470 is about 396.8248984124. The cubic root of 157470 is about 54.0006858623. Note that the first 3 decimals are identical.

Adding to 157470 its reverse (74751), we get a triangular number (232221 = T681).

The spelling of 157470 in words is "one hundred fifty-seven thousand, four hundred seventy".

Divisors: 1 2 3 5 6 10 15 29 30 58 87 145 174 181 290 362 435 543 870 905 1086 1810 2715 5249 5430 10498 15747 26245 31494 52490 78735 157470