20178196 has 12 divisors (see below), whose sum is σ = 35395360. Its totient is φ = 10065240.

The previous prime is 20178187. The next prime is 20178239. The reversal of 20178196 is 69187102.

It is a happy number.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

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, 3990 + ... + 7501.

Almost surely, 2^20178196 is an apocalyptic number.

It is an amenable number.

20178196 is a deficient number, since it is larger than the sum of its proper divisors (15217164).

20178196 is a wasteful number, since it uses less digits than its factorization.

20178196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11934 (or 11932 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 20178196 is about 4492.0146927631. The cubic root of 20178196 is about 272.2455431237.

The spelling of 20178196 in words is "twenty million, one hundred seventy-eight thousand, one hundred ninety-six".