2609920 has 36 divisors (see below), whose sum is σ = 6254640. Its totient is φ = 1043456.

The previous prime is 2609911. The next prime is 2609947. The reversal of 2609920 is 299062.

It is a super-3 number, since 3×2609920³ = 53333838438334464000, which contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 261 + ... + 2299.

It is an arithmetic number, because the mean of its divisors is an integer number (173740).

2^2609920 is an apocalyptic number.

2609920 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 2609920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3127320).

2609920 is an abundant number, since it is smaller than the sum of its proper divisors (3644720).

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

2609920 is an equidigital number, since it uses as much as digits as its factorization.

2609920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2060 (or 2046 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 2609920 is about 1615.5246825722. The cubic root of 2609920 is about 137.6815453188.

The spelling of 2609920 in words is "two million, six hundred nine thousand, nine hundred twenty".