20675916 has 36 divisors (see below), whose sum is σ = 52444392. Its totient is φ = 6868224.

The previous prime is 20675813. The next prime is 20675917. The reversal of 20675916 is 61957602.

20675916 is a `hidden beast` number, since 2 + 0 + 67 + 591 + 6 = 666.

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

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (20675917) 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, 11895 + ... + 13521.

Almost surely, 2^20675916 is an apocalyptic number.

It is an amenable number.

20675916 is an abundant number, since it is smaller than the sum of its proper divisors (31768476).

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

20675916 is a wasteful number, since it uses less digits than its factorization.

20675916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1990 (or 1985 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 20675916 is about 4547.0777429026. The cubic root of 20675916 is about 274.4658103874.

The spelling of 20675916 in words is "twenty million, six hundred seventy-five thousand, nine hundred sixteen".