19957196 has 24 divisors (see below), whose sum is σ = 40315296. Its totient is φ = 8467200.

The previous prime is 19957183. The next prime is 19957199. The reversal of 19957196 is 69175991.

It is a self number, because there is not a number n which added to its sum of digits gives 19957196.

It is not an unprimeable number, because it can be changed into a prime (19957199) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 701 + ... + 6356.

It is an arithmetic number, because the mean of its divisors is an integer number (1679804).

Almost surely, 2^19957196 is an apocalyptic number.

It is an amenable number.

19957196 is an abundant number, since it is smaller than the sum of its proper divisors (20358100).

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

19957196 is a wasteful number, since it uses less digits than its factorization.

19957196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7169 (or 7167 counting only the distinct ones).

The product of its digits is 153090, while the sum is 47.

The square root of 19957196 is about 4467.3477590176. The cubic root of 19957196 is about 271.2479767948.

The spelling of 19957196 in words is "nineteen million, nine hundred fifty-seven thousand, one hundred ninety-six".