2628990 has 128 divisors (see below), whose sum is σ = 8709120. Its totient is φ = 549504.

The previous prime is 2628979. The next prime is 2629001. The reversal of 2628990 is 998262.

It is an interprime number because it is at equal distance from previous prime (2628979) and next prime (2629001).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 24517 + ... + 24623.

It is an arithmetic number, because the mean of its divisors is an integer number (68040).

2^2628990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2628990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4354560).

2628990 is an abundant number, since it is smaller than the sum of its proper divisors (6080130).

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

2628990 is a wasteful number, since it uses less digits than its factorization.

2628990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 2628990 is about 1621.4160477805. The cubic root of 2628990 is about 138.0160661824.

The spelling of 2628990 in words is "two million, six hundred twenty-eight thousand, nine hundred ninety".