72806868 has 36 divisors (see below), whose sum is σ = 192043488. Its totient is φ = 23213520.

The previous prime is 72806831. The next prime is 72806887. The reversal of 72806868 is 86860827.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43138 + ... + 44793.

Almost surely, 2^72806868 is an apocalyptic number.

It is an amenable number.

72806868 is an abundant number, since it is smaller than the sum of its proper divisors (119236620).

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

72806868 is a wasteful number, since it uses less digits than its factorization.

72806868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87964 (or 87959 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The square root of 72806868 is about 8532.6940645965. The cubic root of 72806868 is about 417.5650260268.

The spelling of 72806868 in words is "seventy-two million, eight hundred six thousand, eight hundred sixty-eight".