19378872 has 64 divisors (see below), whose sum is σ = 54612000. Its totient is φ = 6365952.

The previous prime is 19378871. The next prime is 19378883. The reversal of 19378872 is 27887391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19378871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15154 + ... + 16382.

Almost surely, 2^19378872 is an apocalyptic number.

19378872 is a gapful number since it is divisible by the number (12) 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 19378872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27306000).

19378872 is an abundant number, since it is smaller than the sum of its proper divisors (35233128).

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

19378872 is a wasteful number, since it uses less digits than its factorization.

19378872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1317 (or 1307 counting only the distinct ones).

The product of its digits is 169344, while the sum is 45.

The square root of 19378872 is about 4402.1440230869. The cubic root of 19378872 is about 268.6021583109.

The spelling of 19378872 in words is "nineteen million, three hundred seventy-eight thousand, eight hundred seventy-two".