73309872 has 20 divisors (see below), whose sum is σ = 189383960. Its totient is φ = 24436608.

The previous prime is 73309871. The next prime is 73309889. The reversal of 73309872 is 27890337.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 73309872.

It is not an unprimeable number, because it can be changed into a prime (73309871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 763597 + ... + 763692.

It is an arithmetic number, because the mean of its divisors is an integer number (9469198).

Almost surely, 2^73309872 is an apocalyptic number.

It is an amenable number.

73309872 is an abundant number, since it is smaller than the sum of its proper divisors (116074088).

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

73309872 is a wasteful number, since it uses less digits than its factorization.

73309872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1527300 (or 1527294 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 39.

The square root of 73309872 is about 8562.1184294542. The cubic root of 73309872 is about 418.5244365656.

The spelling of 73309872 in words is "seventy-three million, three hundred nine thousand, eight hundred seventy-two".