19699472 has 20 divisors (see below), whose sum is σ = 41104140. Its totient is φ = 9091968.

The previous prime is 19699457. The next prime is 19699483. The reversal of 19699472 is 27499691.

It can be written as a sum of positive squares in 2 ways, for example, as 7054336 + 12645136 = 2656^2 + 3556^2 .

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, 47147 + ... + 47562.

It is an arithmetic number, because the mean of its divisors is an integer number (2055207).

Almost surely, 2^19699472 is an apocalyptic number.

It is an amenable number.

19699472 is an abundant number, since it is smaller than the sum of its proper divisors (21404668).

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

19699472 is a wasteful number, since it uses less digits than its factorization.

19699472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94730 (or 94724 counting only the distinct ones).

The product of its digits is 244944, while the sum is 47.

The square root of 19699472 is about 4438.4087238559. The cubic root of 19699472 is about 270.0752967864.

The spelling of 19699472 in words is "nineteen million, six hundred ninety-nine thousand, four hundred seventy-two".