74304394 has 4 divisors (see below), whose sum is σ = 111456594. Its totient is φ = 37152196.

The previous prime is 74304389. The next prime is 74304403. The reversal of 74304394 is 49340347.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49340347 = 7 ⋅7048621.

It can be written as a sum of positive squares in only one way, i.e., 58599025 + 15705369 = 7655^2 + 3963^2 .

It is a super-2 number, since 2×74304394² = 11042285935414472, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18576097 + ... + 18576100.

Almost surely, 2^74304394 is an apocalyptic number.

74304394 is a deficient number, since it is larger than the sum of its proper divisors (37152200).

74304394 is a wasteful number, since it uses less digits than its factorization.

74304394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37152199.

The product of its (nonzero) digits is 36288, while the sum is 34.

The square root of 74304394 is about 8619.9996519722. Note that the first 3 decimals coincide. The cubic root of 74304394 is about 420.4085103216.

The spelling of 74304394 in words is "seventy-four million, three hundred four thousand, three hundred ninety-four".