20693976 has 16 divisors (see below), whose sum is σ = 51735000. Its totient is φ = 6897984.

The previous prime is 20693941. The next prime is 20693993. The reversal of 20693976 is 67939602.

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, 431101 + ... + 431148.

Almost surely, 2^20693976 is an apocalyptic number.

It is an amenable number.

20693976 is an abundant number, since it is smaller than the sum of its proper divisors (31041024).

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

20693976 is a wasteful number, since it uses less digits than its factorization.

20693976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 862258 (or 862254 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 42.

The square root of 20693976 is about 4549.0632002644. The cubic root of 20693976 is about 274.5457006004.

The spelling of 20693976 in words is "twenty million, six hundred ninety-three thousand, nine hundred seventy-six".