2923440 has 80 divisors (see below), whose sum is σ = 9770208. Its totient is φ = 718848.

The previous prime is 2923433. The next prime is 2923457. The reversal of 2923440 is 443292.

It is a happy number.

2923440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 2923440.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2652 + ... + 3588.

2^2923440 is an apocalyptic number.

2923440 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 2923440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4885104).

2923440 is an abundant number, since it is smaller than the sum of its proper divisors (6846768).

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

2923440 is a wasteful number, since it uses less digits than its factorization.

2923440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 966 (or 960 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 2923440 is about 1709.8070066531. The cubic root of 2923440 is about 142.9874962579.

The spelling of 2923440 in words is "two million, nine hundred twenty-three thousand, four hundred forty".