72798580 has 12 divisors (see below), whose sum is σ = 152877060. Its totient is φ = 29119424.

The previous prime is 72798577. The next prime is 72798581. The reversal of 72798580 is 8589727.

It can be written as a sum of positive squares in 2 ways, for example, as 52620516 + 20178064 = 7254^2 + 4492^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 72798580.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72798581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1819945 + ... + 1819984.

It is an arithmetic number, because the mean of its divisors is an integer number (12739755).

Almost surely, 2^72798580 is an apocalyptic number.

It is an amenable number.

72798580 is an abundant number, since it is smaller than the sum of its proper divisors (80078480).

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

72798580 is a wasteful number, since it uses less digits than its factorization.

72798580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3639938 (or 3639936 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 46.

The square root of 72798580 is about 8532.2083893913. The cubic root of 72798580 is about 417.5491808630.

The spelling of 72798580 in words is "seventy-two million, seven hundred ninety-eight thousand, five hundred eighty".