20790746 has 16 divisors (see below), whose sum is σ = 31799040. Its totient is φ = 10193040.

The previous prime is 20790743. The next prime is 20790751. The reversal of 20790746 is 64709702.

It is not an unprimeable number, because it can be changed into a prime (20790743) 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, 28235 + ... + 28961.

It is an arithmetic number, because the mean of its divisors is an integer number (1987440).

Almost surely, 2^20790746 is an apocalyptic number.

20790746 is a deficient number, since it is larger than the sum of its proper divisors (11008294).

20790746 is a wasteful number, since it uses less digits than its factorization.

20790746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 20790746 is about 4559.6870506648. The cubic root of 20790746 is about 274.9729824697.

The spelling of 20790746 in words is "twenty million, seven hundred ninety thousand, seven hundred forty-six".