19000080 has 120 divisors (see below), whose sum is σ = 69638400. Its totient is φ = 4604160.

The previous prime is 19000073. The next prime is 19000087. The reversal of 19000080 is 8000091.

It is an interprime number because it is at equal distance from previous prime (19000073) and next prime (19000087).

It is a tau number, because it is divible by the number of its divisors (120).

It is a super-2 number, since 2×19000080² = 722006080012800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19000087) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6721 + ... + 9119.

It is an arithmetic number, because the mean of its divisors is an integer number (580320).

Almost surely, 2^19000080 is an apocalyptic number.

19000080 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 19000080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34819200).

19000080 is an abundant number, since it is smaller than the sum of its proper divisors (50638320).

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

19000080 is a wasteful number, since it uses less digits than its factorization.

19000080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2429 (or 2420 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 19000080 is about 4358.9081201604. The cubic root of 19000080 is about 266.8405393842.

The spelling of 19000080 in words is "nineteen million, eighty", and thus it is an aban number and an uban number.