39742636 has 24 divisors (see below), whose sum is σ = 72253440. Its totient is φ = 19113552.

The previous prime is 39742631. The next prime is 39742639. The reversal of 39742636 is 63624793.

It is not an unprimeable number, because it can be changed into a prime (39742631) 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, 9301 + ... + 12883.

It is an arithmetic number, because the mean of its divisors is an integer number (3010560).

Almost surely, 2^39742636 is an apocalyptic number.

It is an amenable number.

39742636 is a deficient number, since it is larger than the sum of its proper divisors (32510804).

39742636 is a wasteful number, since it uses less digits than its factorization.

39742636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3693 (or 3691 counting only the distinct ones).

The product of its digits is 163296, while the sum is 40.

The square root of 39742636 is about 6304.1760762212. The cubic root of 39742636 is about 341.2601335172.

The spelling of 39742636 in words is "thirty-nine million, seven hundred forty-two thousand, six hundred thirty-six".