19972974 has 32 divisors (see below), whose sum is σ = 45792000. Its totient is φ = 5689152.

The previous prime is 19972963. The next prime is 19972987. The reversal of 19972974 is 47927991.

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 15 ways as a sum of consecutive naturals, for example, 20482 + ... + 21434.

It is an arithmetic number, because the mean of its divisors is an integer number (1431000).

Almost surely, 2^19972974 is an apocalyptic number.

19972974 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

19972974 is an abundant number, since it is smaller than the sum of its proper divisors (25819026).

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

19972974 is a wasteful number, since it uses less digits than its factorization.

19972974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1464.

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

The square root of 19972974 is about 4469.1133348797. The cubic root of 19972974 is about 271.3194401277.

The spelling of 19972974 in words is "nineteen million, nine hundred seventy-two thousand, nine hundred seventy-four".