304640842 has 16 divisors (see below), whose sum is σ = 520178112. Its totient is φ = 132452320.

The previous prime is 304640837. The next prime is 304640863. The reversal of 304640842 is 248046403.

It is a super-2 number, since 2×304640842² = 185612085228937928, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 300523 + ... + 301534.

It is an arithmetic number, because the mean of its divisors is an integer number (32511132).

Almost surely, 2^304640842 is an apocalyptic number.

304640842 is a deficient number, since it is larger than the sum of its proper divisors (215537270).

304640842 is a wasteful number, since it uses less digits than its factorization.

304640842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602093.

The product of its (nonzero) digits is 18432, while the sum is 31.

The square root of 304640842 is about 17453.9635040297. The cubic root of 304640842 is about 672.8672267323.

It can be divided in two parts, 304 and 640842, that added together give a palindrome (641146).

The spelling of 304640842 in words is "three hundred four million, six hundred forty thousand, eight hundred forty-two".