304214157 has 16 divisors (see below), whose sum is σ = 485356480. Its totient is φ = 187208496.

The previous prime is 304214153. The next prime is 304214159. The reversal of 304214157 is 751412403.

It is not a de Polignac number, because 304214157 - 2² = 304214153 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 304214157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304214153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 433003 + ... + 433704.

It is an arithmetic number, because the mean of its divisors is an integer number (30334780).

Almost surely, 2^304214157 is an apocalyptic number.

It is an amenable number.

304214157 is a deficient number, since it is larger than the sum of its proper divisors (181142323).

304214157 is a wasteful number, since it uses less digits than its factorization.

304214157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866729 (or 866723 counting only the distinct ones).

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

The square root of 304214157 is about 17441.7360661145. The cubic root of 304214157 is about 672.5529369660.

The spelling of 304214157 in words is "three hundred four million, two hundred fourteen thousand, one hundred fifty-seven".