39872530 has 16 divisors (see below), whose sum is σ = 71850240. Its totient is φ = 15931312.

The previous prime is 39872519. The next prime is 39872533. The reversal of 39872530 is 3527893.

It is a self number, because there is not a number n which added to its sum of digits gives 39872530.

It is not an unprimeable number, because it can be changed into a prime (39872533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11007 + ... + 14173.

It is an arithmetic number, because the mean of its divisors is an integer number (4490640).

Almost surely, 2^39872530 is an apocalyptic number.

39872530 is a deficient number, since it is larger than the sum of its proper divisors (31977710).

39872530 is a wasteful number, since it uses less digits than its factorization.

39872530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4433.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 39872530 is about 6314.4698906559. The cubic root of 39872530 is about 341.6315183620.

The spelling of 39872530 in words is "thirty-nine million, eight hundred seventy-two thousand, five hundred thirty".