72162768 has 40 divisors (see below), whose sum is σ = 186915616. Its totient is φ = 23990400.

The previous prime is 72162743. The next prime is 72162781. The reversal of 72162768 is 86726127.

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, 18423 + ... + 21993.

Almost surely, 2^72162768 is an apocalyptic number.

It is an amenable number.

72162768 is an abundant number, since it is smaller than the sum of its proper divisors (114752848).

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

72162768 is a wasteful number, since it uses less digits than its factorization.

72162768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4003 (or 3997 counting only the distinct ones).

The product of its digits is 56448, while the sum is 39.

The square root of 72162768 is about 8494.8671561126. The cubic root of 72162768 is about 416.3300204174.

The spelling of 72162768 in words is "seventy-two million, one hundred sixty-two thousand, seven hundred sixty-eight".