20265336 has 128 divisors (see below), whose sum is σ = 69350400. Its totient is φ = 5339520.

The previous prime is 20265299. The next prime is 20265391. The reversal of 20265336 is 63356202.

20265336 is a `hidden beast` number, since 2 + 0 + 2 + 653 + 3 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19141 + ... + 20171.

It is an arithmetic number, because the mean of its divisors is an integer number (541800).

Almost surely, 2^20265336 is an apocalyptic number.

20265336 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20265336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34675200).

20265336 is an abundant number, since it is smaller than the sum of its proper divisors (49085064).

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

20265336 is a wasteful number, since it uses less digits than its factorization.

20265336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1066 (or 1056 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

The square root of 20265336 is about 4501.7036774981. The cubic root of 20265336 is about 272.6368798616.

It can be divided in two parts, 20 and 265336, that added together give a triangular number (265356 = T₇₂₈).

The spelling of 20265336 in words is "twenty million, two hundred sixty-five thousand, three hundred thirty-six".