19772124 has 12 divisors (see below), whose sum is σ = 46134984. Its totient is φ = 6590704.

The previous prime is 19772069. The next prime is 19772149. The reversal of 19772124 is 42127791.

It is a tau number, because it is divible by the number of its divisors (12).

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, 823827 + ... + 823850.

It is an arithmetic number, because the mean of its divisors is an integer number (3844582).

Almost surely, 2^19772124 is an apocalyptic number.

It is an amenable number.

19772124 is an abundant number, since it is smaller than the sum of its proper divisors (26362860).

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

19772124 is a wasteful number, since it uses less digits than its factorization.

19772124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1647684 (or 1647682 counting only the distinct ones).

The product of its digits is 7056, while the sum is 33.

The square root of 19772124 is about 4446.5856564335. The cubic root of 19772124 is about 270.4069036145.

The spelling of 19772124 in words is "nineteen million, seven hundred seventy-two thousand, one hundred twenty-four".