74288313 has 24 divisors (see below), whose sum is σ = 120976800. Its totient is φ = 45021240.

The previous prime is 74288303. The next prime is 74288329. The reversal of 74288313 is 31388247.

It is not a de Polignac number, because 74288313 - 2¹⁰ = 74287289 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (74288303) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8103 + ... + 14636.

It is an arithmetic number, because the mean of its divisors is an integer number (5040700).

Almost surely, 2^74288313 is an apocalyptic number.

It is an amenable number.

74288313 is a deficient number, since it is larger than the sum of its proper divisors (46688487).

74288313 is a wasteful number, since it uses less digits than its factorization.

74288313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22770 (or 22753 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 74288313 is about 8619.0668288394. The cubic root of 74288313 is about 420.3781797823.

The spelling of 74288313 in words is "seventy-four million, two hundred eighty-eight thousand, three hundred thirteen".