20037216 has 24 divisors (see below), whose sum is σ = 52597944. Its totient is φ = 6679040.

The previous prime is 20037211. The next prime is 20037217. The reversal of 20037216 is 61273002.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a junction number, because it is equal to n+sod(n) for n = 20037192 and 20037201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20037211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104265 + ... + 104456.

It is an arithmetic number, because the mean of its divisors is an integer number (2191581).

Almost surely, 2^20037216 is an apocalyptic number.

It is an amenable number.

20037216 is an abundant number, since it is smaller than the sum of its proper divisors (32560728).

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

20037216 is a wasteful number, since it uses less digits than its factorization.

20037216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208734 (or 208726 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 20037216 is about 4476.2948964518. The cubic root of 20037216 is about 271.6100236120.

The spelling of 20037216 in words is "twenty million, thirty-seven thousand, two hundred sixteen".