20604492 has 36 divisors (see below), whose sum is σ = 53071200. Its totient is φ = 6737952.

The previous prime is 20604457. The next prime is 20604499. The reversal of 20604492 is 29440602.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (20604499) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3492 + ... + 7307.

It is an arithmetic number, because the mean of its divisors is an integer number (1474200).

Almost surely, 2^20604492 is an apocalyptic number.

It is an amenable number.

20604492 is an abundant number, since it is smaller than the sum of its proper divisors (32466708).

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

20604492 is a wasteful number, since it uses less digits than its factorization.

20604492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10862 (or 10857 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 20604492 is about 4539.2171131154. The cubic root of 20604492 is about 274.1494025995.

The spelling of 20604492 in words is "twenty million, six hundred four thousand, four hundred ninety-two".