72274730 has 32 divisors (see below), whose sum is σ = 143735040. Its totient is φ = 25945920.

The previous prime is 72274721. The next prime is 72274747. The reversal of 72274730 is 3747227.

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 15 ways as a sum of consecutive naturals, for example, 4532 + ... + 12848.

It is an arithmetic number, because the mean of its divisors is an integer number (4491720).

Almost surely, 2^72274730 is an apocalyptic number.

72274730 is a deficient number, since it is larger than the sum of its proper divisors (71460310).

72274730 is a wasteful number, since it uses less digits than its factorization.

72274730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8414.

The product of its (nonzero) digits is 16464, while the sum is 32.

The square root of 72274730 is about 8501.4545814231. The cubic root of 72274730 is about 416.5452239852.

The spelling of 72274730 in words is "seventy-two million, two hundred seventy-four thousand, seven hundred thirty".