20445612 has 36 divisors (see below), whose sum is σ = 52441368. Its totient is φ = 6195200.

The previous prime is 20445599. The next prime is 20445613. The reversal of 20445612 is 21654402.

It is not an unprimeable number, because it can be changed into a prime (20445613) 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, 5589 + ... + 8492.

Almost surely, 2^20445612 is an apocalyptic number.

20445612 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20445612 is an abundant number, since it is smaller than the sum of its proper divisors (31995756).

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

20445612 is a wasteful number, since it uses less digits than its factorization.

20445612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14110 (or 14097 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 20445612 is about 4521.6824302465. The cubic root of 20445612 is about 273.4429337717.

The spelling of 20445612 in words is "twenty million, four hundred forty-five thousand, six hundred twelve".