304421157 has 12 divisors (see below), whose sum is σ = 439944960. Its totient is φ = 202843368.

The previous prime is 304421153. The next prime is 304421177. The reversal of 304421157 is 751124403.

It is not a de Polignac number, because 304421157 - 2² = 304421153 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 304421157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304421153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12598 + ... + 27704.

It is an arithmetic number, because the mean of its divisors is an integer number (36662080).

Almost surely, 2^304421157 is an apocalyptic number.

It is an amenable number.

304421157 is a deficient number, since it is larger than the sum of its proper divisors (135523803).

304421157 is a wasteful number, since it uses less digits than its factorization.

304421157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17352 (or 17349 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 304421157 is about 17447.6690993382. The cubic root of 304421157 is about 672.7054467358.

The spelling of 304421157 in words is "three hundred four million, four hundred twenty-one thousand, one hundred fifty-seven".