20936028 has 24 divisors (see below), whose sum is σ = 50536080. Its totient is φ = 6737920.

The previous prime is 20936023. The next prime is 20936029. The reversal of 20936028 is 82063902.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 20935986 and 20936004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20936021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29733 + ... + 30428.

It is an arithmetic number, because the mean of its divisors is an integer number (2105670).

Almost surely, 2^20936028 is an apocalyptic number.

It is an amenable number.

20936028 is an abundant number, since it is smaller than the sum of its proper divisors (29600052).

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

20936028 is a wasteful number, since it uses less digits than its factorization.

20936028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60197 (or 60195 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 20936028 is about 4575.5904537010. The cubic root of 20936028 is about 275.6119836408.

The spelling of 20936028 in words is "twenty million, nine hundred thirty-six thousand, twenty-eight".