20792628 has 18 divisors (see below), whose sum is σ = 52559234. Its totient is φ = 6930864.

The previous prime is 20792543. The next prime is 20792633. The reversal of 20792628 is 82629702.

20792628 is a `hidden beast` number, since 20 + 7 + 9 + 2 + 628 = 666.

It can be written as a sum of positive squares in only one way, i.e., 15539364 + 5253264 = 3942^2 + 2292^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 577573 = 20792628 / (2 + 0 + 7 + 9 + 2 + 6 + 2 + 8).

It is a nialpdrome in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 20792592 and 20792601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 288751 + ... + 288822.

Almost surely, 2^20792628 is an apocalyptic number.

It is an amenable number.

20792628 is an abundant number, since it is smaller than the sum of its proper divisors (31766606).

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

20792628 is a wasteful number, since it uses less digits than its factorization.

20792628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577583 (or 577578 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 20792628 is about 4559.8934198071. The cubic root of 20792628 is about 274.9812791664.

The spelling of 20792628 in words is "twenty million, seven hundred ninety-two thousand, six hundred twenty-eight".