39996672 has 72 divisors (see below), whose sum is σ = 112092960. Its totient is φ = 12625920.

The previous prime is 39996661. The next prime is 39996683. The reversal of 39996672 is 27669993.

It is an interprime number because it is at equal distance from previous prime (39996661) and next prime (39996683).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13222 + ... + 15962.

Almost surely, 2^39996672 is an apocalyptic number.

39996672 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39996672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56046480).

39996672 is an abundant number, since it is smaller than the sum of its proper divisors (72096288).

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

39996672 is a wasteful number, since it uses less digits than its factorization.

39996672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2779 (or 2765 counting only the distinct ones).

The product of its digits is 1102248, while the sum is 51.

The square root of 39996672 is about 6324.2922133627. The cubic root of 39996672 is about 341.9857044057.

The spelling of 39996672 in words is "thirty-nine million, nine hundred ninety-six thousand, six hundred seventy-two".