72761980 has 24 divisors (see below), whose sum is σ = 156931488. Its totient is φ = 28317888.

The previous prime is 72761971. The next prime is 72761987. The reversal of 72761980 is 8916727.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72761987) 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, 48424 + ... + 49903.

It is an arithmetic number, because the mean of its divisors is an integer number (6538812).

Almost surely, 2^72761980 is an apocalyptic number.

It is an amenable number.

72761980 is an abundant number, since it is smaller than the sum of its proper divisors (84169508).

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

72761980 is a wasteful number, since it uses less digits than its factorization.

72761980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98373 (or 98371 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 72761980 is about 8530.0633057440. The cubic root of 72761980 is about 417.4791938667.

The spelling of 72761980 in words is "seventy-two million, seven hundred sixty-one thousand, nine hundred eighty".