20745792 has 42 divisors (see below), whose sum is σ = 59465718. Its totient is φ = 6915072.

The previous prime is 20745787. The next prime is 20745799. The reversal of 20745792 is 29754702.

It can be written as a sum of positive squares in only one way, i.e., 17842176 + 2903616 = 4224^2 + 1704^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20745799) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17433 + ... + 18584.

Almost surely, 2^20745792 is an apocalyptic number.

It is an amenable number.

20745792 is an abundant number, since it is smaller than the sum of its proper divisors (38719926).

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

20745792 is a wasteful number, since it uses less digits than its factorization.

20745792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36035 (or 36022 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 20745792 is about 4554.7548781466. The cubic root of 20745792 is about 274.7746561678.

The spelling of 20745792 in words is "twenty million, seven hundred forty-five thousand, seven hundred ninety-two".