19892972 has 24 divisors (see below), whose sum is σ = 38323152. Its totient is φ = 8960000.

The previous prime is 19892969. The next prime is 19892987. The reversal of 19892972 is 27929891.

It is a happy 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, 2972 + ... + 6972.

It is an arithmetic number, because the mean of its divisors is an integer number (1596798).

Almost surely, 2^19892972 is an apocalyptic number.

It is an amenable number.

19892972 is a deficient number, since it is larger than the sum of its proper divisors (18430180).

19892972 is a wasteful number, since it uses less digits than its factorization.

19892972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4129 (or 4127 counting only the distinct ones).

The product of its digits is 163296, while the sum is 47.

The square root of 19892972 is about 4460.1538090070. The cubic root of 19892972 is about 270.9566975560.

The spelling of 19892972 in words is "nineteen million, eight hundred ninety-two thousand, nine hundred seventy-two".