39137872 has 40 divisors (see below), whose sum is σ = 82415360. Its totient is φ = 17936640.

The previous prime is 39137863. The next prime is 39137873. The reversal of 39137872 is 27873193.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39137873) 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, 7348 + ... + 11500.

It is an arithmetic number, because the mean of its divisors is an integer number (2060384).

Almost surely, 2^39137872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39137872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41207680).

39137872 is an abundant number, since it is smaller than the sum of its proper divisors (43277488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39137872 is a wasteful number, since it uses less digits than its factorization.

39137872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4211 (or 4205 counting only the distinct ones).

The product of its digits is 63504, while the sum is 40.

The square root of 39137872 is about 6256.0268541623. The cubic root of 39137872 is about 339.5202923546.

The spelling of 39137872 in words is "thirty-nine million, one hundred thirty-seven thousand, eight hundred seventy-two".