19426972 has 12 divisors (see below), whose sum is σ = 34029576. Its totient is φ = 9704240.

The previous prime is 19426963. The next prime is 19426997. The reversal of 19426972 is 27962491.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4947 + ... + 7957.

It is an arithmetic number, because the mean of its divisors is an integer number (2835798).

Almost surely, 2^19426972 is an apocalyptic number.

It is an amenable number.

19426972 is a deficient number, since it is larger than the sum of its proper divisors (14602604).

19426972 is a wasteful number, since it uses less digits than its factorization.

19426972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4628 (or 4626 counting only the distinct ones).

The product of its digits is 54432, while the sum is 40.

The square root of 19426972 is about 4407.6038841983. The cubic root of 19426972 is about 268.8242057933.

The spelling of 19426972 in words is "nineteen million, four hundred twenty-six thousand, nine hundred seventy-two".