72798578 has 16 divisors (see below), whose sum is σ = 110894400. Its totient is φ = 35838000.

The previous prime is 72798577. The next prime is 72798581. The reversal of 72798578 is 87589727.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (72798577) 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 7 ways as a sum of consecutive naturals, for example, 39293 + ... + 41103.

It is an arithmetic number, because the mean of its divisors is an integer number (6930900).

Almost surely, 2^72798578 is an apocalyptic number.

72798578 is a deficient number, since it is larger than the sum of its proper divisors (38095822).

72798578 is a wasteful number, since it uses less digits than its factorization.

72798578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2113.

The product of its digits is 1975680, while the sum is 53.

The square root of 72798578 is about 8532.2082721884. The cubic root of 72798578 is about 417.5491770392.

The spelling of 72798578 in words is "seventy-two million, seven hundred ninety-eight thousand, five hundred seventy-eight".