304997427 has 32 divisors (see below), whose sum is σ = 518745600. Its totient is φ = 173492064.

The previous prime is 304997419. The next prime is 304997453. The reversal of 304997427 is 724799403.

It is not a de Polignac number, because 304997427 - 2³ = 304997419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (304997417) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39349 + ... + 46457.

It is an arithmetic number, because the mean of its divisors is an integer number (16210800).

Almost surely, 2^304997427 is an apocalyptic number.

304997427 is a deficient number, since it is larger than the sum of its proper divisors (213748173).

304997427 is a wasteful number, since it uses less digits than its factorization.

304997427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7352 (or 7346 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 45.

The square root of 304997427 is about 17464.1755316419. The cubic root of 304997427 is about 673.1296568606.

Subtracting from 304997427 its product of nonzero digits (381024), we obtain a palindrome (304616403).

The spelling of 304997427 in words is "three hundred four million, nine hundred ninety-seven thousand, four hundred twenty-seven".