19108928 has 28 divisors (see below), whose sum is σ = 38234112. Its totient is φ = 9475200.

The previous prime is 19108913. The next prime is 19108937. The reversal of 19108928 is 82980191.

19108928 is an admirable number.

It is a super-2 number, since 2×19108928² = 730302258618368, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 19108891 and 19108900.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6953 + ... + 9303.

It is an arithmetic number, because the mean of its divisors is an integer number (1365504).

Almost surely, 2^19108928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19108928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19117056).

19108928 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

19108928 is a wasteful number, since it uses less digits than its factorization.

19108928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2490 (or 2480 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 38.

The square root of 19108928 is about 4371.3759847444. The cubic root of 19108928 is about 267.3491297036.

The spelling of 19108928 in words is "nineteen million, one hundred eight thousand, nine hundred twenty-eight".