19427972 has 12 divisors (see below), whose sum is σ = 34171200. Its totient is φ = 9664776.

The previous prime is 19427953. The next prime is 19428011. The reversal of 19427972 is 27972491.

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, 11408 + ... + 12999.

It is an arithmetic number, because the mean of its divisors is an integer number (2847600).

Almost surely, 2^19427972 is an apocalyptic number.

It is an amenable number.

19427972 is a deficient number, since it is larger than the sum of its proper divisors (14743228).

19427972 is a wasteful number, since it uses less digits than its factorization.

19427972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24610 (or 24608 counting only the distinct ones).

The product of its digits is 63504, while the sum is 41.

The square root of 19427972 is about 4407.7173230596. The cubic root of 19427972 is about 268.8288182739.

The spelling of 19427972 in words is "nineteen million, four hundred twenty-seven thousand, nine hundred seventy-two".