20204974 has 8 divisors (see below), whose sum is σ = 30328200. Its totient is φ = 10095576.

The previous prime is 20204957. The next prime is 20204981. The reversal of 20204974 is 47940202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1792 + ... + 6604.

It is an arithmetic number, because the mean of its divisors is an integer number (3791025).

Almost surely, 2^20204974 is an apocalyptic number.

20204974 is a deficient number, since it is larger than the sum of its proper divisors (10123226).

20204974 is a wasteful number, since it uses less digits than its factorization.

20204974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6914.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 20204974 is about 4494.9943270265. The cubic root of 20204974 is about 272.3659200667.

The spelling of 20204974 in words is "twenty million, two hundred four thousand, nine hundred seventy-four".