152640939 has 16 divisors (see below), whose sum is σ = 222238080. Its totient is φ = 92420160.

The previous prime is 152640937. The next prime is 152640989. The reversal of 152640939 is 939046251.

152640939 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 152640939 - 2¹ = 152640937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 152640897 and 152640906.

It is not an unprimeable number, because it can be changed into a prime (152640937) 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, 51999 + ... + 54855.

It is an arithmetic number, because the mean of its divisors is an integer number (13889880).

Almost surely, 2^152640939 is an apocalyptic number.

152640939 is a deficient number, since it is larger than the sum of its proper divisors (69597141).

152640939 is a wasteful number, since it uses less digits than its factorization.

152640939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4490.

The product of its (nonzero) digits is 58320, while the sum is 39.

The square root of 152640939 is about 12354.7941706853. The cubic root of 152640939 is about 534.4294018415.

The spelling of 152640939 in words is "one hundred fifty-two million, six hundred forty thousand, nine hundred thirty-nine".