2566228 has 18 divisors (see below), whose sum is σ = 5224506. Its totient is φ = 1099728.

The previous prime is 2566219. The next prime is 2566229. The reversal of 2566228 is 8226652.

It can be written as a sum of positive squares in only one way, i.e., 2502724 + 63504 = 1582^2 + 252^2 .

It is a super-2 number, since 2×2566228² = 13171052295968, 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 2566228.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2566229) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6351 + ... + 6742.

2^2566228 is an apocalyptic number.

2566228 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2566228 is an abundant number, since it is smaller than the sum of its proper divisors (2658278).

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

2566228 is a wasteful number, since it uses less digits than its factorization.

2566228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13111 (or 13102 counting only the distinct ones).

The product of its digits is 11520, while the sum is 31.

The square root of 2566228 is about 1601.9450677224. The cubic root of 2566228 is about 136.9089205840.

The spelling of 2566228 in words is "two million, five hundred sixty-six thousand, two hundred twenty-eight".