20964396 has 12 divisors (see below), whose sum is σ = 48916952. Its totient is φ = 6988128.

The previous prime is 20964373. The next prime is 20964409. The reversal of 20964396 is 69346902.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

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, 873505 + ... + 873528.

Almost surely, 2^20964396 is an apocalyptic number.

It is an amenable number.

20964396 is an abundant number, since it is smaller than the sum of its proper divisors (27952556).

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

20964396 is a wasteful number, since it uses less digits than its factorization.

20964396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1747040 (or 1747038 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 39.

The square root of 20964396 is about 4578.6893321124. The cubic root of 20964396 is about 275.7364108096.

The spelling of 20964396 in words is "twenty million, nine hundred sixty-four thousand, three hundred ninety-six".