72087936 has 64 divisors (see below), whose sum is σ = 192559680. Its totient is φ = 23894528.

The previous prime is 72087923. The next prime is 72087937. The reversal of 72087936 is 63978027.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72087937) 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, 86755 + ... + 87581.

It is an arithmetic number, because the mean of its divisors is an integer number (3008745).

Almost surely, 2^72087936 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 72087936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96279840).

72087936 is an abundant number, since it is smaller than the sum of its proper divisors (120471744).

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

72087936 is a wasteful number, since it uses less digits than its factorization.

72087936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1071 (or 1059 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 42.

The square root of 72087936 is about 8490.4614715574. The cubic root of 72087936 is about 416.1860607540.

The spelling of 72087936 in words is "seventy-two million, eighty-seven thousand, nine hundred thirty-six".