20190964 has 12 divisors (see below), whose sum is σ = 36870624. Its totient is φ = 9656504.

The previous prime is 20190943. The next prime is 20191009. The reversal of 20190964 is 46909102.

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 3 ways as a sum of consecutive naturals, for example, 109642 + ... + 109825.

It is an arithmetic number, because the mean of its divisors is an integer number (3072552).

Almost surely, 2^20190964 is an apocalyptic number.

It is an amenable number.

20190964 is a deficient number, since it is larger than the sum of its proper divisors (16679660).

20190964 is a wasteful number, since it uses less digits than its factorization.

20190964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219494 (or 219492 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 20190964 is about 4493.4356565995. The cubic root of 20190964 is about 272.3029532474.

The spelling of 20190964 in words is "twenty million, one hundred ninety thousand, nine hundred sixty-four".