20620476 has 18 divisors (see below), whose sum is σ = 52124072. Its totient is φ = 6873480.

The previous prime is 20620469. The next prime is 20620477. The reversal of 20620476 is 67402602.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20620477) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 286360 + ... + 286431.

Almost surely, 2^20620476 is an apocalyptic number.

It is an amenable number.

20620476 is an abundant number, since it is smaller than the sum of its proper divisors (31503596).

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

20620476 is a wasteful number, since it uses less digits than its factorization.

20620476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572801 (or 572796 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 20620476 is about 4540.9774278232. The cubic root of 20620476 is about 274.2202750323.

The spelling of 20620476 in words is "twenty million, six hundred twenty thousand, four hundred seventy-six".