2253220 has 24 divisors (see below), whose sum is σ = 4778424. Its totient is φ = 892416.

The previous prime is 2253203. The next prime is 2253221. The reversal of 2253220 is 223522.

It can be written as a sum of positive squares in 4 ways, for example, as 86436 + 2166784 = 294^2 + 1472^2 .

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 2253194 and 2253203.

It is not an unprimeable number, because it can be changed into a prime (2253221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1762 + ... + 2758.

It is an arithmetic number, because the mean of its divisors is an integer number (199101).

2^2253220 is an apocalyptic number.

2253220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2253220 is an abundant number, since it is smaller than the sum of its proper divisors (2525204).

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

2253220 is a wasteful number, since it uses less digits than its factorization.

2253220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1119 (or 1117 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 2253220 is about 1501.0729495931. The cubic root of 2253220 is about 131.0995494502.

Adding to 2253220 its reverse (223522), we get a palindrome (2476742).

The spelling of 2253220 in words is "two million, two hundred fifty-three thousand, two hundred twenty".