20738812 has 6 divisors (see below), whose sum is σ = 36292928. Its totient is φ = 10369404.

The previous prime is 20738807. The next prime is 20738813. The reversal of 20738812 is 21883702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20738813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2592348 + ... + 2592355.

Almost surely, 2^20738812 is an apocalyptic number.

It is an amenable number.

20738812 is a deficient number, since it is larger than the sum of its proper divisors (15554116).

20738812 is a wasteful number, since it uses less digits than its factorization.

20738812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5184707 (or 5184705 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 20738812 is about 4553.9885814525. The cubic root of 20738812 is about 274.7438363878.

The spelling of 20738812 in words is "twenty million, seven hundred thirty-eight thousand, eight hundred twelve".