152734640 has 20 divisors (see below), whose sum is σ = 355108224. Its totient is φ = 61093824.

The previous prime is 152734639. The next prime is 152734643. The reversal of 152734640 is 46437251.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 152734597 and 152734606.

It is not an unprimeable number, because it can be changed into a prime (152734643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 954512 + ... + 954671.

Almost surely, 2^152734640 is an apocalyptic number.

152734640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

152734640 is an abundant number, since it is smaller than the sum of its proper divisors (202373584).

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

152734640 is a wasteful number, since it uses less digits than its factorization.

152734640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1909196 (or 1909190 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 152734640 is about 12358.5856795994. The cubic root of 152734640 is about 534.5387353891.

The spelling of 152734640 in words is "one hundred fifty-two million, seven hundred thirty-four thousand, six hundred forty".