19378680 has 64 divisors (see below), whose sum is σ = 58544640. Its totient is φ = 5131392.

The previous prime is 19378679. The next prime is 19378703. The reversal of 19378680 is 8687391.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19557 + ... + 20523.

It is an arithmetic number, because the mean of its divisors is an integer number (914760).

Almost surely, 2^19378680 is an apocalyptic number.

19378680 is a gapful number since it is divisible by the number (10) 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 19378680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29272320).

19378680 is an abundant number, since it is smaller than the sum of its proper divisors (39165960).

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

19378680 is a wasteful number, since it uses less digits than its factorization.

19378680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1148 (or 1144 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 19378680 is about 4402.1222154774. The cubic root of 19378680 is about 268.6012712317.

The spelling of 19378680 in words is "nineteen million, three hundred seventy-eight thousand, six hundred eighty".