2628390 has 16 divisors (see below), whose sum is σ = 6308208. Its totient is φ = 700896.

The previous prime is 2628383. The next prime is 2628401. The reversal of 2628390 is 938262.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 87613 = 2628390 / (2 + 6 + 2 + 8 + 3 + 9 + 0).

It is a Curzon number.

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, 43777 + ... + 43836.

It is an arithmetic number, because the mean of its divisors is an integer number (394263).

2^2628390 is an apocalyptic number.

2628390 is an abundant number, since it is smaller than the sum of its proper divisors (3679818).

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

2628390 is a wasteful number, since it uses less digits than its factorization.

2628390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87623.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 2628390 is about 1621.2310137670. The cubic root of 2628390 is about 138.0055658331.

The spelling of 2628390 in words is "two million, six hundred twenty-eight thousand, three hundred ninety".