72801580 has 24 divisors (see below), whose sum is σ = 156440592. Its totient is φ = 28443072.

The previous prime is 72801577. The next prime is 72801583. The reversal of 72801580 is 8510827.

It is an interprime number because it is at equal distance from previous prime (72801577) and next prime (72801583).

It is not an unprimeable number, because it can be changed into a prime (72801583) 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, 41467 + ... + 43186.

It is an arithmetic number, because the mean of its divisors is an integer number (6518358).

Almost surely, 2^72801580 is an apocalyptic number.

It is an amenable number.

72801580 is an abundant number, since it is smaller than the sum of its proper divisors (83639012).

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

72801580 is a wasteful number, since it uses less digits than its factorization.

72801580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84705 (or 84703 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 31.

The square root of 72801580 is about 8532.3841920064. The cubic root of 72801580 is about 417.5549164617.

The spelling of 72801580 in words is "seventy-two million, eight hundred one thousand, five hundred eighty".