2897920 has 48 divisors (see below), whose sum is σ = 6977880. Its totient is φ = 1155072.

The previous prime is 2897897. The next prime is 2897933. The reversal of 2897920 is 297982.

It is a self number, because there is not a number n which added to its sum of digits gives 2897920.

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, 10099 + ... + 10381.

2^2897920 is an apocalyptic number.

2897920 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 2897920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3488940).

2897920 is an abundant number, since it is smaller than the sum of its proper divisors (4079960).

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

2897920 is an equidigital number, since it uses as much as digits as its factorization.

2897920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310 (or 290 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 2897920 is about 1702.3278180186. The cubic root of 2897920 is about 142.5702126547.

The spelling of 2897920 in words is "two million, eight hundred ninety-seven thousand, nine hundred twenty".