20404602 has 32 divisors (see below), whose sum is σ = 45508800. Its totient is φ = 6776784.

The previous prime is 20404591. The next prime is 20404679. The reversal of 20404602 is 20640402.

20404602 is a `hidden beast` number, since 20 + 40 + 4 + 602 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19968 + ... + 20964.

It is an arithmetic number, because the mean of its divisors is an integer number (1422150).

Almost surely, 2^20404602 is an apocalyptic number.

20404602 is an abundant number, since it is smaller than the sum of its proper divisors (25104198).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20404602 is a wasteful number, since it uses less digits than its factorization.

20404602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1387 (or 1381 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 20404602 is about 4517.1453374892. The cubic root of 20404602 is about 273.2599865991.

The spelling of 20404602 in words is "twenty million, four hundred four thousand, six hundred two".