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152971428 = 22312747619
BaseRepresentation
bin10010001111000…
…10100010100100
3101122211202100110
421013202202210
5303130041203
623102413020
73535143561
oct1107424244
9348752313
10152971428
1179391775
1243291170
13258cc54c
141645d868
15d669d03
hex91e28a4

152971428 has 12 divisors (see below), whose sum is σ = 356933360. Its totient is φ = 50990472.

The previous prime is 152971421. The next prime is 152971439. The reversal of 152971428 is 824179251.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (152971421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6373798 + ... + 6373821.

Almost surely, 2152971428 is an apocalyptic number.

It is an amenable number.

152971428 is an abundant number, since it is smaller than the sum of its proper divisors (203961932).

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

152971428 is a wasteful number, since it uses less digits than its factorization.

152971428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12747626 (or 12747624 counting only the distinct ones).

The product of its digits is 40320, while the sum is 39.

The square root of 152971428 is about 12368.1618682810. The cubic root of 152971428 is about 534.8148286295.

The spelling of 152971428 in words is "one hundred fifty-two million, nine hundred seventy-one thousand, four hundred twenty-eight".

Divisors: 1 2 3 4 6 12 12747619 25495238 38242857 50990476 76485714 152971428