19143040 has 64 divisors (see below), whose sum is σ = 52313760. Its totient is φ = 6561792.

The previous prime is 19143011. The next prime is 19143067. The reversal of 19143040 is 4034191.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2344 + ... + 6616.

Almost surely, 2^19143040 is an apocalyptic number.

19143040 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 19143040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26156880).

19143040 is an abundant number, since it is smaller than the sum of its proper divisors (33170720).

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

19143040 is an equidigital number, since it uses as much as digits as its factorization.

19143040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4299 (or 4287 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 19143040 is about 4375.2759912947. The cubic root of 19143040 is about 267.5081198222.

The spelling of 19143040 in words is "nineteen million, one hundred forty-three thousand, forty".