20790616 has 32 divisors (see below), whose sum is σ = 48602880. Its totient is φ = 8100000.

The previous prime is 20790613. The next prime is 20790683. The reversal of 20790616 is 61609702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20790611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16260 + ... + 17491.

It is an arithmetic number, because the mean of its divisors is an integer number (1518840).

Almost surely, 2^20790616 is an apocalyptic number.

It is an amenable number.

20790616 is an abundant number, since it is smaller than the sum of its proper divisors (27812264).

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

20790616 is a wasteful number, since it uses less digits than its factorization.

20790616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33775 (or 33771 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 20790616 is about 4559.6727952782. The cubic root of 20790616 is about 274.9724093531.

The spelling of 20790616 in words is "twenty million, seven hundred ninety thousand, six hundred sixteen".