20137812 has 12 divisors (see below), whose sum is σ = 46988256. Its totient is φ = 6712600.

The previous prime is 20137787. The next prime is 20137823. The reversal of 20137812 is 21873102.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 839064 + ... + 839087.

It is an arithmetic number, because the mean of its divisors is an integer number (3915688).

Almost surely, 2^20137812 is an apocalyptic number.

It is an amenable number.

20137812 is an abundant number, since it is smaller than the sum of its proper divisors (26850444).

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

20137812 is a wasteful number, since it uses less digits than its factorization.

20137812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1678158 (or 1678156 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 20137812 is about 4487.5173537269. The cubic root of 20137812 is about 272.0638006334.

The spelling of 20137812 in words is "twenty million, one hundred thirty-seven thousand, eight hundred twelve".