74304157 has 4 divisors (see below), whose sum is σ = 74693376. Its totient is φ = 73914940.

The previous prime is 74304149. The next prime is 74304169. The reversal of 74304157 is 75140347.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 74304157 - 2³ = 74304149 is a prime.

It is a super-2 number, since 2×74304157² = 11042215494961298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74304557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194323 + ... + 194704.

It is an arithmetic number, because the mean of its divisors is an integer number (18673344).

Almost surely, 2^74304157 is an apocalyptic number.

It is an amenable number.

74304157 is a deficient number, since it is larger than the sum of its proper divisors (389219).

74304157 is a wasteful number, since it uses less digits than its factorization.

74304157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389218.

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 74304157 is about 8619.9859048609. The cubic root of 74304157 is about 420.4080633452.

The spelling of 74304157 in words is "seventy-four million, three hundred four thousand, one hundred fifty-seven".