20901336 has 16 divisors (see below), whose sum is σ = 52253400. Its totient is φ = 6967104.

The previous prime is 20901329. The next prime is 20901367. The reversal of 20901336 is 63310902.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 870889 = 20901336 / (2 + 0 + 9 + 0 + 1 + 3 + 3 + 6).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 435421 + ... + 435468.

Almost surely, 2^20901336 is an apocalyptic number.

It is an amenable number.

20901336 is an abundant number, since it is smaller than the sum of its proper divisors (31352064).

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

20901336 is a wasteful number, since it uses less digits than its factorization.

20901336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 870898 (or 870894 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 24.

The square root of 20901336 is about 4571.7978957955. The cubic root of 20901336 is about 275.4596653961.

The spelling of 20901336 in words is "twenty million, nine hundred one thousand, three hundred thirty-six".