19952166 has 32 divisors (see below), whose sum is σ = 45239040. Its totient is φ = 5815584.

The previous prime is 19952159. The next prime is 19952171. The reversal of 19952166 is 66125991.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5250 + ... + 8213.

It is an arithmetic number, because the mean of its divisors is an integer number (1413720).

Almost surely, 2^19952166 is an apocalyptic number.

19952166 is an abundant number, since it is smaller than the sum of its proper divisors (25286874).

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

19952166 is a wasteful number, since it uses less digits than its factorization.

19952166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13500.

The product of its digits is 29160, while the sum is 39.

The square root of 19952166 is about 4466.7847496829. The cubic root of 19952166 is about 271.2251864862.

The spelling of 19952166 in words is "nineteen million, nine hundred fifty-two thousand, one hundred sixty-six".