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145052860 = 225137167317
BaseRepresentation
bin10001010010101…
…01010010111100
3101002221110010011
420221111102330
5244113142420
622220553004
73410633431
oct1051252274
9332843104
10145052860
11749733a7
12406b2764
13240891c4
141539bb88
15cb0395a
hex8a554bc

145052860 has 48 divisors (see below), whose sum is σ = 309645504. Its totient is φ = 57072128.

The previous prime is 145052851. The next prime is 145052861. The reversal of 145052860 is 68250541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145052861) 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, 457422 + ... + 457738.

It is an arithmetic number, because the mean of its divisors is an integer number (6450948).

Almost surely, 2145052860 is an apocalyptic number.

145052860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145052860 is an abundant number, since it is smaller than the sum of its proper divisors (164592644).

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

145052860 is a wasteful number, since it uses less digits than its factorization.

145052860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630 (or 628 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 145052860 is about 12043.7892708234. The cubic root of 145052860 is about 525.4226196437.

The spelling of 145052860 in words is "one hundred forty-five million, fifty-two thousand, eight hundred sixty".

Divisors: 1 2 4 5 10 20 137 167 274 317 334 548 634 668 685 835 1268 1370 1585 1670 2740 3170 3340 6340 22879 43429 45758 52939 86858 91516 105878 114395 173716 211756 217145 228790 264695 434290 457580 529390 868580 1058780 7252643 14505286 29010572 36263215 72526430 145052860