2500290 has 48 divisors (see below), whose sum is σ = 7004088. Its totient is φ = 615168.

The previous prime is 2500273. The next prime is 2500297. The reversal of 2500290 is 920052.

It can be written as a sum of positive squares in 4 ways, for example, as 859329 + 1640961 = 927^2 + 1281^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2500297) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 102 + ... + 2238.

2^2500290 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2500290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3502044).

2500290 is an abundant number, since it is smaller than the sum of its proper divisors (4503798).

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

2500290 is a wasteful number, since it uses less digits than its factorization.

2500290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2163 (or 2160 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 2500290 is about 1581.2305334770. The cubic root of 2500290 is about 135.7261285009.

The spelling of 2500290 in words is "two million, five hundred thousand, two hundred ninety".