20994012 has 96 divisors (see below), whose sum is σ = 61779200. Its totient is φ = 6111936.

The previous prime is 20994011. The next prime is 20994023. The reversal of 20994012 is 21049902.

It is a super-2 number, since 2×20994012² = 881497079712288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20994011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26283 + ... + 27069.

Almost surely, 2^20994012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20994012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30889600).

20994012 is an abundant number, since it is smaller than the sum of its proper divisors (40785188).

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

20994012 is a wasteful number, since it uses less digits than its factorization.

20994012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 832 (or 824 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 20994012 is about 4581.9223040117. The cubic root of 20994012 is about 275.8661922279.

The spelling of 20994012 in words is "twenty million, nine hundred ninety-four thousand, twelve".