2657228 has 24 divisors (see below), whose sum is σ = 5440512. Its totient is φ = 1111824.

The previous prime is 2657203. The next prime is 2657231. The reversal of 2657228 is 8227562.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2¹³ + 6⁵ + 5⁹ + 7 + 2¹⁷ + 2¹⁹ + 8⁵ .

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 2657194 and 2657203.

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, 101 + ... + 2307.

It is an arithmetic number, because the mean of its divisors is an integer number (226688).

2^2657228 is an apocalyptic number.

2657228 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2657228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2720256).

2657228 is an abundant number, since it is smaller than the sum of its proper divisors (2783284).

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

2657228 is a wasteful number, since it uses less digits than its factorization.

2657228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2261 (or 2259 counting only the distinct ones).

The product of its digits is 13440, while the sum is 32.

The square root of 2657228 is about 1630.1006103919. The cubic root of 2657228 is about 138.5084513082.

The spelling of 2657228 in words is "two million, six hundred fifty-seven thousand, two hundred twenty-eight".