204670642 has 16 divisors (see below), whose sum is σ = 338235264. Its totient is φ = 92110000.

The previous prime is 204670621. The next prime is 204670657. The reversal of 204670642 is 246076402.

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, 43834 + ... + 48277.

It is an arithmetic number, because the mean of its divisors is an integer number (21139704).

Almost surely, 2^204670642 is an apocalyptic number.

204670642 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

204670642 is a deficient number, since it is larger than the sum of its proper divisors (133564622).

204670642 is a wasteful number, since it uses less digits than its factorization.

204670642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92225.

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 204670642 is about 14306.3147595738. The cubic root of 204670642 is about 589.3209097517.

The spelling of 204670642 in words is "two hundred four million, six hundred seventy thousand, six hundred forty-two".