19772112 has 20 divisors (see below), whose sum is σ = 51078080. Its totient is φ = 6590688.

The previous prime is 19772069. The next prime is 19772149. The reversal of 19772112 is 21127791.

It is a happy number.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 19772112.

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, 205912 + ... + 206007.

It is an arithmetic number, because the mean of its divisors is an integer number (2553904).

Almost surely, 2^19772112 is an apocalyptic number.

19772112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19772112 is an abundant number, since it is smaller than the sum of its proper divisors (31305968).

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

19772112 is a wasteful number, since it uses less digits than its factorization.

19772112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411930 (or 411924 counting only the distinct ones).

The product of its digits is 1764, while the sum is 30.

The square root of 19772112 is about 4446.5843070834. The cubic root of 19772112 is about 270.4068489098.

The spelling of 19772112 in words is "nineteen million, seven hundred seventy-two thousand, one hundred twelve".