2900440 has 32 divisors (see below), whose sum is σ = 6642000. Its totient is φ = 1139584.

The previous prime is 2900437. The next prime is 2900441. The reversal of 2900440 is 440092.

It is a zygodrome in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2900441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1746 + ... + 2974.

2^2900440 is an apocalyptic number.

2900440 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 2900440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3321000).

2900440 is an abundant number, since it is smaller than the sum of its proper divisors (3741560).

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

2900440 is a wasteful number, since it uses less digits than its factorization.

2900440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1299 (or 1295 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 2900440 is about 1703.0678201411. The cubic root of 2900440 is about 142.6115265218.

The spelling of 2900440 in words is "two million, nine hundred thousand, four hundred forty".