20196188 has 6 divisors (see below), whose sum is σ = 35343336. Its totient is φ = 10098092.

The previous prime is 20196173. The next prime is 20196199. The reversal of 20196188 is 88169102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2524520 + ... + 2524527.

It is an arithmetic number, because the mean of its divisors is an integer number (5890556).

Almost surely, 2^20196188 is an apocalyptic number.

It is an amenable number.

20196188 is a deficient number, since it is larger than the sum of its proper divisors (15147148).

20196188 is a wasteful number, since it uses less digits than its factorization.

20196188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5049051 (or 5049049 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 35.

The square root of 20196188 is about 4494.0169114057. The cubic root of 20196188 is about 272.3264355002.

The spelling of 20196188 in words is "twenty million, one hundred ninety-six thousand, one hundred eighty-eight".