2319840 has 120 divisors (see below), whose sum is σ = 8232840. Its totient is φ = 615168.

The previous prime is 2319829. The next prime is 2319841. The reversal of 2319840 is 489132.

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

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a plaindrome in base 14.

It is a zygodrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2319841) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12871 + ... + 13049.

It is an arithmetic number, because the mean of its divisors is an integer number (68607).

2^2319840 is an apocalyptic number.

2319840 is a gapful number since it is divisible by the number (20) 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 2319840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4116420).

2319840 is an abundant number, since it is smaller than the sum of its proper divisors (5913000).

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

2319840 is a wasteful number, since it uses less digits than its factorization.

2319840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206 (or 189 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 2319840 is about 1523.1020976940. The cubic root of 2319840 is about 132.3790756235.

The spelling of 2319840 in words is "two million, three hundred nineteen thousand, eight hundred forty".