20964336 has 20 divisors (see below), whose sum is σ = 54157992. Its totient is φ = 6988096.

The previous prime is 20964331. The next prime is 20964343. The reversal of 20964336 is 63346902.

It is a junction number, because it is equal to n+sod(n) for n = 20964297 and 20964306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20964331) 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, 218331 + ... + 218426.

Almost surely, 2^20964336 is an apocalyptic number.

It is an amenable number.

20964336 is an abundant number, since it is smaller than the sum of its proper divisors (33193656).

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

20964336 is a wasteful number, since it uses less digits than its factorization.

20964336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436768 (or 436762 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 33.

The square root of 20964336 is about 4578.6827800144. The cubic root of 20964336 is about 275.7361477572.

The spelling of 20964336 in words is "twenty million, nine hundred sixty-four thousand, three hundred thirty-six".