19013972 has 12 divisors (see below), whose sum is σ = 33675936. Its totient is φ = 9392280.

The previous prime is 19013971. The next prime is 19013987. The reversal of 19013972 is 27931091.

It is a happy number.

It is a super-2 number, since 2×19013972² = 723062262433568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19013971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28304 + ... + 28967.

It is an arithmetic number, because the mean of its divisors is an integer number (2806328).

Almost surely, 2^19013972 is an apocalyptic number.

It is an amenable number.

19013972 is a deficient number, since it is larger than the sum of its proper divisors (14661964).

19013972 is a wasteful number, since it uses less digits than its factorization.

19013972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57358 (or 57356 counting only the distinct ones).

The product of its (nonzero) digits is 3402, while the sum is 32.

The square root of 19013972 is about 4360.5013473223. The cubic root of 19013972 is about 266.9055574558.

The spelling of 19013972 in words is "nineteen million, thirteen thousand, nine hundred seventy-two".