2898640 has 40 divisors (see below), whose sum is σ = 7097760. Its totient is φ = 1097856.

The previous prime is 2898613. The next prime is 2898661. The reversal of 2898640 is 468982.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×2898640² = 16804227699200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2898640.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 567 + ... + 2473.

It is an arithmetic number, because the mean of its divisors is an integer number (177444).

2^2898640 is an apocalyptic number.

2898640 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 2898640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3548880).

2898640 is an abundant number, since it is smaller than the sum of its proper divisors (4199120).

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

2898640 is a wasteful number, since it uses less digits than its factorization.

2898640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1939 (or 1933 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 2898640 is about 1702.5392800168. The cubic root of 2898640 is about 142.5820190598.

The spelling of 2898640 in words is "two million, eight hundred ninety-eight thousand, six hundred forty".