20900396 has 48 divisors (see below), whose sum is σ = 41489280. Its totient is φ = 9131520.

The previous prime is 20900389. The next prime is 20900401. The reversal of 20900396 is 69300902.

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, 215420 + ... + 215516.

It is an arithmetic number, because the mean of its divisors is an integer number (864360).

Almost surely, 2^20900396 is an apocalyptic number.

It is an amenable number.

20900396 is a deficient number, since it is larger than the sum of its proper divisors (20588884).

20900396 is a wasteful number, since it uses less digits than its factorization.

20900396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254 (or 252 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 20900396 is about 4571.6950904451. The cubic root of 20900396 is about 275.4555358999.

The spelling of 20900396 in words is "twenty million, nine hundred thousand, three hundred ninety-six".