39691028 has 24 divisors (see below), whose sum is σ = 75014688. Its totient is φ = 18266976.

The previous prime is 39691027. The next prime is 39691037. The reversal of 39691028 is 82019693.

It is a junction number, because it is equal to n+sod(n) for n = 39690982 and 39691000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39691027) 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, 22175 + ... + 23897.

It is an arithmetic number, because the mean of its divisors is an integer number (3125612).

Almost surely, 2^39691028 is an apocalyptic number.

It is an amenable number.

39691028 is a deficient number, since it is larger than the sum of its proper divisors (35323660).

39691028 is a wasteful number, since it uses less digits than its factorization.

39691028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2183 (or 2181 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 39691028 is about 6300.0815867733. The cubic root of 39691028 is about 341.1123545111.

The spelling of 39691028 in words is "thirty-nine million, six hundred ninety-one thousand, twenty-eight".