72788330 has 16 divisors (see below), whose sum is σ = 136715904. Its totient is φ = 27849360.

The previous prime is 72788329. The next prime is 72788351. The reversal of 72788330 is 3388727.

It is an unprimeable number.

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, 158006 + ... + 158465.

It is an arithmetic number, because the mean of its divisors is an integer number (8544744).

Almost surely, 2^72788330 is an apocalyptic number.

72788330 is a deficient number, since it is larger than the sum of its proper divisors (63927574).

72788330 is a wasteful number, since it uses less digits than its factorization.

72788330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316501.

The product of its (nonzero) digits is 56448, while the sum is 38.

The square root of 72788330 is about 8531.6077031237. The cubic root of 72788330 is about 417.5295830449.

The spelling of 72788330 in words is "seventy-two million, seven hundred eighty-eight thousand, three hundred thirty".