39645572 has 12 divisors (see below), whose sum is σ = 69491520. Its totient is φ = 19790856.

The previous prime is 39645569. The next prime is 39645577. The reversal of 39645572 is 27554693.

It is not an unprimeable number, because it can be changed into a prime (39645577) 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, 5072 + ... + 10247.

It is an arithmetic number, because the mean of its divisors is an integer number (5790960).

Almost surely, 2^39645572 is an apocalyptic number.

It is an amenable number.

39645572 is a deficient number, since it is larger than the sum of its proper divisors (29845948).

39645572 is a wasteful number, since it uses less digits than its factorization.

39645572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15970 (or 15968 counting only the distinct ones).

The product of its digits is 226800, while the sum is 41.

The square root of 39645572 is about 6296.4729809632. The cubic root of 39645572 is about 340.9820855562.

The spelling of 39645572 in words is "thirty-nine million, six hundred forty-five thousand, five hundred seventy-two".