72277872 has 40 divisors (see below), whose sum is σ = 191768976. Its totient is φ = 23440896.

The previous prime is 72277871. The next prime is 72277903. The reversal of 72277872 is 27877227.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72277871) 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, 18573 + ... + 22124.

Almost surely, 2^72277872 is an apocalyptic number.

It is an amenable number.

72277872 is an abundant number, since it is smaller than the sum of its proper divisors (119491104).

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

72277872 is a wasteful number, since it uses less digits than its factorization.

72277872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40745 (or 40739 counting only the distinct ones).

The product of its digits is 153664, while the sum is 42.

The square root of 72277872 is about 8501.6393713213. The cubic root of 72277872 is about 416.5512600559.

The spelling of 72277872 in words is "seventy-two million, two hundred seventy-seven thousand, eight hundred seventy-two".