19272972 has 12 divisors (see below), whose sum is σ = 44970296. Its totient is φ = 6424320.

The previous prime is 19272937. The next prime is 19272977. The reversal of 19272972 is 27927291.

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

It is a nialpdrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 19272972.

It is not an unprimeable number, because it can be changed into a prime (19272977) 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, 803029 + ... + 803052.

Almost surely, 2^19272972 is an apocalyptic number.

19272972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19272972 is an abundant number, since it is smaller than the sum of its proper divisors (25697324).

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

19272972 is a wasteful number, since it uses less digits than its factorization.

19272972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1606088 (or 1606086 counting only the distinct ones).

The product of its digits is 31752, while the sum is 39.

The square root of 19272972 is about 4390.0993155053. The cubic root of 19272972 is about 268.1119863169. Note that the first 3 decimals are identical.

The spelling of 19272972 in words is "nineteen million, two hundred seventy-two thousand, nine hundred seventy-two".