2569890 has 32 divisors (see below), whose sum is σ = 6531840. Its totient is φ = 644864.

The previous prime is 2569841. The next prime is 2569891. The reversal of 2569890 is 989652.

It is a happy number.

2569890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2569890² = 13208669224200, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (2569891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2010 + ... + 3029.

It is an arithmetic number, because the mean of its divisors is an integer number (204120).

2^2569890 is an apocalyptic number.

2569890 is an abundant number, since it is smaller than the sum of its proper divisors (3961950).

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

2569890 is a wasteful number, since it uses less digits than its factorization.

2569890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5066.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 2569890 is about 1603.0876457636. The cubic root of 2569890 is about 136.9740125109.

The spelling of 2569890 in words is "two million, five hundred sixty-nine thousand, eight hundred ninety".