72763820 has 24 divisors (see below), whose sum is σ = 157734528. Its totient is φ = 28166400.

The previous prime is 72763777. The next prime is 72763829. The reversal of 72763820 is 2836727.

It is not an unprimeable number, because it can be changed into a prime (72763829) 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, 58061 + ... + 59300.

It is an arithmetic number, because the mean of its divisors is an integer number (6572272).

Almost surely, 2^72763820 is an apocalyptic number.

It is an amenable number.

72763820 is an abundant number, since it is smaller than the sum of its proper divisors (84970708).

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

72763820 is a wasteful number, since it uses less digits than its factorization.

72763820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117401 (or 117399 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 72763820 is about 8530.1711588924. The cubic root of 72763820 is about 417.4827128989.

The spelling of 72763820 in words is "seventy-two million, seven hundred sixty-three thousand, eight hundred twenty".