2905920 has 84 divisors (see below), whose sum is σ = 10005060. Its totient is φ = 774144.

The previous prime is 2905919. The next prime is 2905921. The reversal of 2905920 is 295092.

It is an interprime number because it is at equal distance from previous prime (2905919) and next prime (2905921).

It can be written as a sum of positive squares in 2 ways, for example, as 968256 + 1937664 = 984^2 + 1392^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2905921) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2376 + ... + 3384.

2^2905920 is an apocalyptic number.

2905920 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 2905920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5002530).

2905920 is an abundant number, since it is smaller than the sum of its proper divisors (7099140).

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

2905920 is a wasteful number, since it uses less digits than its factorization.

2905920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1032 (or 1019 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 2905920 is about 1704.6759222797. The cubic root of 2905920 is about 142.7012852588.

The spelling of 2905920 in words is "two million, nine hundred five thousand, nine hundred twenty".