20260928 has 14 divisors (see below), whose sum is σ = 40205406. Its totient is φ = 10130432.

The previous prime is 20260921. The next prime is 20260951. The reversal of 20260928 is 82906202.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 19998784 + 262144 = 4472^2 + 512^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20260928.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20260921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158225 + ... + 158352.

Almost surely, 2^20260928 is an apocalyptic number.

It is an amenable number.

20260928 is a deficient number, since it is larger than the sum of its proper divisors (19944478).

20260928 is an equidigital number, since it uses as much as digits as its factorization.

20260928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316589 (or 316579 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 20260928 is about 4501.2140584513. The cubic root of 20260928 is about 272.6171109565.

The spelling of 20260928 in words is "twenty million, two hundred sixty thousand, nine hundred twenty-eight".