73218304 has 18 divisors (see below), whose sum is σ = 146151110. Its totient is φ = 36609024.

The previous prime is 73218289. The next prime is 73218317. The reversal of 73218304 is 40381237.

It can be written as a sum of positive squares in only one way, i.e., 71368704 + 1849600 = 8448^2 + 1360^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142749 + ... + 143260.

Almost surely, 2^73218304 is an apocalyptic number.

It is an amenable number.

73218304 is a deficient number, since it is larger than the sum of its proper divisors (72932806).

73218304 is an equidigital number, since it uses as much as digits as its factorization.

73218304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286025 (or 286011 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 73218304 is about 8556.7694838648. The cubic root of 73218304 is about 418.3501107363.

It can be divided in two parts, 7321 and 8304, that added together give a 6-th power (15625 = 5⁶).

The spelling of 73218304 in words is "seventy-three million, two hundred eighteen thousand, three hundred four".