20604770 has 16 divisors (see below), whose sum is σ = 38285568. Its totient is φ = 7975920.

The previous prime is 20604767. The next prime is 20604781. The reversal of 20604770 is 7740602.

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 7 ways as a sum of consecutive naturals, for example, 32924 + ... + 33543.

It is an arithmetic number, because the mean of its divisors is an integer number (2392848).

Almost surely, 2^20604770 is an apocalyptic number.

20604770 is a deficient number, since it is larger than the sum of its proper divisors (17680798).

20604770 is a wasteful number, since it uses less digits than its factorization.

20604770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66505.

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 20604770 is about 4539.2477350328. The cubic root of 20604770 is about 274.1506355538.

The spelling of 20604770 in words is "twenty million, six hundred four thousand, seven hundred seventy".