19004140 has 12 divisors (see below), whose sum is σ = 39908736. Its totient is φ = 7601648.

The previous prime is 19004119. The next prime is 19004171. The reversal of 19004140 is 4140091.

It is a super-2 number, since 2×19004140² = 722314674279200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 475084 + ... + 475123.

It is an arithmetic number, because the mean of its divisors is an integer number (3325728).

Almost surely, 2^19004140 is an apocalyptic number.

19004140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19004140 is an abundant number, since it is smaller than the sum of its proper divisors (20904596).

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

19004140 is a wasteful number, since it uses less digits than its factorization.

19004140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 950216 (or 950214 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 19004140 is about 4359.3738082436. The cubic root of 19004140 is about 266.8595444872.

The spelling of 19004140 in words is "nineteen million, four thousand, one hundred forty".