19948928 has 16 divisors (see below), whose sum is σ = 39742260. Its totient is φ = 9974400.

The previous prime is 19948927. The next prime is 19948931. The reversal of 19948928 is 82984991.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19948921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77798 + ... + 78053.

Almost surely, 2^19948928 is an apocalyptic number.

It is an amenable number.

19948928 is a deficient number, since it is larger than the sum of its proper divisors (19793332).

19948928 is an equidigital number, since it uses as much as digits as its factorization.

19948928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155865 (or 155853 counting only the distinct ones).

The product of its digits is 373248, while the sum is 50.

The square root of 19948928 is about 4466.4222818717. The cubic root of 19948928 is about 271.2105134817.

The spelling of 19948928 in words is "nineteen million, nine hundred forty-eight thousand, nine hundred twenty-eight".