19428704 has 12 divisors (see below), whose sum is σ = 38250324. Its totient is φ = 9714336.

The previous prime is 19428691. The next prime is 19428743. The reversal of 19428704 is 40782491.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

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, 303542 + ... + 303605.

It is an arithmetic number, because the mean of its divisors is an integer number (3187527).

Almost surely, 2^19428704 is an apocalyptic number.

It is an amenable number.

19428704 is a deficient number, since it is larger than the sum of its proper divisors (18821620).

19428704 is an equidigital number, since it uses as much as digits as its factorization.

19428704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607157 (or 607149 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 19428704 is about 4407.8003584555. The cubic root of 19428704 is about 268.8321945093.

The spelling of 19428704 in words is "nineteen million, four hundred twenty-eight thousand, seven hundred four".