20792045 has 4 divisors (see below), whose sum is σ = 24950460. Its totient is φ = 16633632.

The previous prime is 20792029. The next prime is 20792063. The reversal of 20792045 is 54029702.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54029702 = 2 ⋅27014851.

It can be written as a sum of positive squares in 2 ways, for example, as 13235044 + 7557001 = 3638^2 + 2749^2 .

It is a cyclic number.

It is not a de Polignac number, because 20792045 - 2⁴ = 20792029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20791999 and 20792017.

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, 2079200 + ... + 2079209.

It is an arithmetic number, because the mean of its divisors is an integer number (6237615).

Almost surely, 2^20792045 is an apocalyptic number.

It is an amenable number.

20792045 is a deficient number, since it is larger than the sum of its proper divisors (4158415).

20792045 is an equidigital number, since it uses as much as digits as its factorization.

20792045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4158414.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 20792045 is about 4559.8294924262. The cubic root of 20792045 is about 274.9787090955.

The spelling of 20792045 in words is "twenty million, seven hundred ninety-two thousand, forty-five".