19948904 has 16 divisors (see below), whose sum is σ = 38274720. Its totient is φ = 9742320.

The previous prime is 19948867. The next prime is 19948909. The reversal of 19948904 is 40984991.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (19948909) 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, 28652 + ... + 29339.

It is an arithmetic number, because the mean of its divisors is an integer number (2392170).

Almost surely, 2^19948904 is an apocalyptic number.

It is an amenable number.

19948904 is a deficient number, since it is larger than the sum of its proper divisors (18325816).

19948904 is a wasteful number, since it uses less digits than its factorization.

19948904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58040 (or 58036 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 19948904 is about 4466.4195951567. The cubic root of 19948904 is about 271.2104047197.

The spelling of 19948904 in words is "nineteen million, nine hundred forty-eight thousand, nine hundred four".