20962644 has 48 divisors (see below), whose sum is σ = 50633856. Its totient is φ = 6745600.

The previous prime is 20962631. The next prime is 20962687. The reversal of 20962644 is 44626902.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67249 + ... + 67559.

It is an arithmetic number, because the mean of its divisors is an integer number (1054872).

Almost surely, 2^20962644 is an apocalyptic number.

It is an amenable number.

20962644 is an abundant number, since it is smaller than the sum of its proper divisors (29671212).

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

20962644 is a wasteful number, since it uses less digits than its factorization.

20962644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496 (or 494 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 20962644 is about 4578.4980069888. The cubic root of 20962644 is about 275.7287294745.

The spelling of 20962644 in words is "twenty million, nine hundred sixty-two thousand, six hundred forty-four".