19123328 has 48 divisors (see below), whose sum is σ = 44331750. Its totient is φ = 8193024.

The previous prime is 19123319. The next prime is 19123331. The reversal of 19123328 is 82332191.

It can be written as a sum of positive squares in only one way, i.e., 18593344 + 529984 = 4312^2 + 728^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 19123328.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4748 + ... + 7796.

Almost surely, 2^19123328 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 19123328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22165875).

19123328 is an abundant number, since it is smaller than the sum of its proper divisors (25208422).

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

19123328 is an equidigital number, since it uses as much as digits as its factorization.

19123328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3077 (or 3058 counting only the distinct ones).

The product of its digits is 2592, while the sum is 29.

The square root of 19123328 is about 4373.0227531994. The cubic root of 19123328 is about 267.4162686665.

The spelling of 19123328 in words is "nineteen million, one hundred twenty-three thousand, three hundred twenty-eight".