19688948 has 6 divisors (see below), whose sum is σ = 34455666. Its totient is φ = 9844472.

The previous prime is 19688927. The next prime is 19688953. The reversal of 19688948 is 84988691.

It can be written as a sum of positive squares in only one way, i.e., 19114384 + 574564 = 4372^2 + 758^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 19688948.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2461115 + ... + 2461122.

It is an arithmetic number, because the mean of its divisors is an integer number (5742611).

Almost surely, 2^19688948 is an apocalyptic number.

It is an amenable number.

19688948 is a deficient number, since it is larger than the sum of its proper divisors (14766718).

19688948 is a wasteful number, since it uses less digits than its factorization.

19688948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4922241 (or 4922239 counting only the distinct ones).

The product of its digits is 995328, while the sum is 53.

The square root of 19688948 is about 4437.2230054393. The cubic root of 19688948 is about 270.0271943345.

The spelling of 19688948 in words is "nineteen million, six hundred eighty-eight thousand, nine hundred forty-eight".