19949328 has 120 divisors (see below), whose sum is σ = 66259648. Its totient is φ = 5692032.

The previous prime is 19949273. The next prime is 19949333. The reversal of 19949328 is 82394991.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26850 + ... + 27582.

Almost surely, 2^19949328 is an apocalyptic number.

19949328 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19949328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33129824).

19949328 is an abundant number, since it is smaller than the sum of its proper divisors (46310320).

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

19949328 is an equidigital number, since it uses as much as digits as its factorization.

19949328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763 (or 745 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 19949328 is about 4466.4670602166. The cubic root of 19949328 is about 271.2123261686.

The spelling of 19949328 in words is "nineteen million, nine hundred forty-nine thousand, three hundred twenty-eight".