19974972 has 24 divisors (see below), whose sum is σ = 47072592. Its totient is φ = 6592000.

The previous prime is 19974967. The next prime is 19975003. The reversal of 19974972 is 27947991.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7029 + ... + 9452.

It is an arithmetic number, because the mean of its divisors is an integer number (1961358).

Almost surely, 2^19974972 is an apocalyptic number.

19974972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19974972 is an abundant number, since it is smaller than the sum of its proper divisors (27097620).

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

19974972 is a wasteful number, since it uses less digits than its factorization.

19974972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16589 (or 16587 counting only the distinct ones).

The product of its digits is 285768, while the sum is 48.

The square root of 19974972 is about 4469.3368635626. The cubic root of 19974972 is about 271.3284869889.

The spelling of 19974972 in words is "nineteen million, nine hundred seventy-four thousand, nine hundred seventy-two".