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128952470964 = 22319565581013
BaseRepresentation
bin111100000011000101…
…0101000110110110100
3110022211220211020221010
41320012022220312310
54103043313032324
6135123454552220
712213363626562
oct1700612506664
9408756736833
10128952470964
114a763343059
1220ba9b08670
13c210b65b75
146354308a32
15354ade4829
hex1e062a8db4

128952470964 has 24 divisors (see below), whose sum is σ = 316725367840. Its totient is φ = 40721832864.

The previous prime is 128952470953. The next prime is 128952470981. The reversal of 128952470964 is 469074259821.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 282790279 + ... + 282790734.

Almost surely, 2128952470964 is an apocalyptic number.

It is an amenable number.

128952470964 is an abundant number, since it is smaller than the sum of its proper divisors (187772896876).

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

128952470964 is a wasteful number, since it uses less digits than its factorization.

128952470964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565581039 (or 565581037 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 57.

The spelling of 128952470964 in words is "one hundred twenty-eight billion, nine hundred fifty-two million, four hundred seventy thousand, nine hundred sixty-four".

Divisors: 1 2 3 4 6 12 19 38 57 76 114 228 565581013 1131162026 1696743039 2262324052 3393486078 6786972156 10746039247 21492078494 32238117741 42984156988 64476235482 128952470964