20549896 has 16 divisors (see below), whose sum is σ = 38707200. Its totient is φ = 10227984.

The previous prime is 20549891. The next prime is 20549909. The reversal of 20549896 is 69894502.

It is a super-2 number, since 2×20549896² = 844596451221632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20549891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3976 + ... + 7543.

It is an arithmetic number, because the mean of its divisors is an integer number (2419200).

Almost surely, 2^20549896 is an apocalyptic number.

It is an amenable number.

20549896 is a deficient number, since it is larger than the sum of its proper divisors (18157304).

20549896 is a wasteful number, since it uses less digits than its factorization.

20549896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11748 (or 11744 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 20549896 is about 4533.1993117444. The cubic root of 20549896 is about 273.9070492961.

The spelling of 20549896 in words is "twenty million, five hundred forty-nine thousand, eight hundred ninety-six".