73400745 has 32 divisors (see below), whose sum is σ = 128502144. Its totient is φ = 35481600.

The previous prime is 73400737. The next prime is 73400753. The reversal of 73400745 is 54700437.

73400745 = T₂₇₈ + T₂₇₉ + ... + T₇₇₂.

It is an interprime number because it is at equal distance from previous prime (73400737) and next prime (73400753).

It is not a de Polignac number, because 73400745 - 2³ = 73400737 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 108729 + ... + 109401.

It is an arithmetic number, because the mean of its divisors is an integer number (4015692).

Almost surely, 2^73400745 is an apocalyptic number.

It is an amenable number.

73400745 is a deficient number, since it is larger than the sum of its proper divisors (55101399).

73400745 is a wasteful number, since it uses less digits than its factorization.

73400745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1353.

The product of its (nonzero) digits is 11760, while the sum is 30.

The square root of 73400745 is about 8567.4234750011. The cubic root of 73400745 is about 418.6972958099.

The spelling of 73400745 in words is "seventy-three million, four hundred thousand, seven hundred forty-five".