19914928 has 20 divisors (see below), whose sum is σ = 42093288. Its totient is φ = 9052160.

The previous prime is 19914901. The next prime is 19914929. The reversal of 19914928 is 82941991.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (19914929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56401 + ... + 56752.

Almost surely, 2^19914928 is an apocalyptic number.

It is an amenable number.

19914928 is an abundant number, since it is smaller than the sum of its proper divisors (22178360).

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

19914928 is a wasteful number, since it uses less digits than its factorization.

19914928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113172 (or 113166 counting only the distinct ones).

The product of its digits is 46656, while the sum is 43.

The square root of 19914928 is about 4462.6144803243. The cubic root of 19914928 is about 271.0563464487.

The spelling of 19914928 in words is "nineteen million, nine hundred fourteen thousand, nine hundred twenty-eight".