20265536 has 14 divisors (see below), whose sum is σ = 40214550. Its totient is φ = 10132736.

The previous prime is 20265523. The next prime is 20265551. The reversal of 20265536 is 63556202.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 19855936 + 409600 = 4456^2 + 640^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20265499 and 20265508.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158261 + ... + 158388.

Almost surely, 2^20265536 is an apocalyptic number.

It is an amenable number.

20265536 is a deficient number, since it is larger than the sum of its proper divisors (19949014).

20265536 is an equidigital number, since it uses as much as digits as its factorization.

20265536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316661 (or 316651 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 20265536 is about 4501.7258912555. The cubic root of 20265536 is about 272.6377767494.

The spelling of 20265536 in words is "twenty million, two hundred sixty-five thousand, five hundred thirty-six".