74390073 has 32 divisors (see below), whose sum is σ = 109900800. Its totient is φ = 44548416.

The previous prime is 74390059. The next prime is 74390077. The reversal of 74390073 is 37009347.

It is not a de Polignac number, because 74390073 - 2⁸ = 74389817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (74390077) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 234511 + ... + 234827.

It is an arithmetic number, because the mean of its divisors is an integer number (3434400).

Almost surely, 2^74390073 is an apocalyptic number.

It is an amenable number.

74390073 is a deficient number, since it is larger than the sum of its proper divisors (35510727).

74390073 is a wasteful number, since it uses less digits than its factorization.

74390073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541.

The product of its (nonzero) digits is 15876, while the sum is 33.

The square root of 74390073 is about 8624.9679999406. The cubic root of 74390073 is about 420.5700366367.

The spelling of 74390073 in words is "seventy-four million, three hundred ninety thousand, seventy-three".