19224972 has 48 divisors (see below), whose sum is σ = 53680480. Its totient is φ = 5914944.

The previous prime is 19224967. The next prime is 19224983. The reversal of 19224972 is 27942291.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5443 + ... + 8250.

Almost surely, 2^19224972 is an apocalyptic number.

19224972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19224972 is an abundant number, since it is smaller than the sum of its proper divisors (34455508).

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

19224972 is a wasteful number, since it uses less digits than its factorization.

19224972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13719 (or 13711 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 19224972 is about 4384.6290607074. The cubic root of 19224972 is about 267.8892205698.

The spelling of 19224972 in words is "nineteen million, two hundred twenty-four thousand, nine hundred seventy-two".