73400072 has 16 divisors (see below), whose sum is σ = 137839740. Its totient is φ = 36642816.

The previous prime is 73400057. The next prime is 73400083. The reversal of 73400072 is 27000437.

It can be written as a sum of positive squares in 2 ways, for example, as 73376356 + 23716 = 8566^2 + 154^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1433 + ... + 12200.

Almost surely, 2^73400072 is an apocalyptic number.

It is an amenable number.

73400072 is a deficient number, since it is larger than the sum of its proper divisors (64439668).

73400072 is a wasteful number, since it uses less digits than its factorization.

73400072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14312 (or 14308 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 23.

The square root of 73400072 is about 8567.3841982253. The cubic root of 73400072 is about 418.6960161492.

The spelling of 73400072 in words is "seventy-three million, four hundred thousand, seventy-two".