19278560 has 72 divisors (see below), whose sum is σ = 53003160. Its totient is φ = 6607104.

The previous prime is 19278551. The next prime is 19278583. The reversal of 19278560 is 6587291.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6611 + ... + 9069.

It is an arithmetic number, because the mean of its divisors is an integer number (736155).

Almost surely, 2^19278560 is an apocalyptic number.

19278560 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 19278560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26501580).

19278560 is an abundant number, since it is smaller than the sum of its proper divisors (33724600).

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

19278560 is a wasteful number, since it uses less digits than its factorization.

19278560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2488 (or 2473 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 19278560 is about 4390.7357014514. The cubic root of 19278560 is about 268.1378959173.

The spelling of 19278560 in words is "nineteen million, two hundred seventy-eight thousand, five hundred sixty".