39812872 has 32 divisors (see below), whose sum is σ = 82130400. Its totient is φ = 18091920.

The previous prime is 39812869. The next prime is 39812879. The reversal of 39812872 is 27821893.

It is not an unprimeable number, because it can be changed into a prime (39812879) 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, 8779 + ... + 12517.

It is an arithmetic number, because the mean of its divisors is an integer number (2566575).

Almost surely, 2^39812872 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 39812872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41065200).

39812872 is an abundant number, since it is smaller than the sum of its proper divisors (42317528).

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

39812872 is a wasteful number, since it uses less digits than its factorization.

39812872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3778 (or 3752 counting only the distinct ones).

The product of its digits is 48384, while the sum is 40.

The square root of 39812872 is about 6309.7442103464. The cubic root of 39812872 is about 341.4610482295.

The spelling of 39812872 in words is "thirty-nine million, eight hundred twelve thousand, eight hundred seventy-two".