20265436 has 12 divisors (see below), whose sum is σ = 35508928. Its totient is φ = 10120032.

The previous prime is 20265433. The next prime is 20265467. The reversal of 20265436 is 63456202.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20265433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1045 + ... + 6451.

Almost surely, 2^20265436 is an apocalyptic number.

It is an amenable number.

20265436 is a deficient number, since it is larger than the sum of its proper divisors (15243492).

20265436 is a wasteful number, since it uses less digits than its factorization.

20265436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6348 (or 6346 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 20265436 is about 4501.7147843905. The cubic root of 20265436 is about 272.6373283063.

The spelling of 20265436 in words is "twenty million, two hundred sixty-five thousand, four hundred thirty-six".