2252220 has 24 divisors (see below), whose sum is σ = 6306384. Its totient is φ = 600576.

The previous prime is 2252219. The next prime is 2252221. The reversal of 2252220 is 222522.

It is an interprime number because it is at equal distance from previous prime (2252219) and next prime (2252221).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 2252220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2252221) 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, 18709 + ... + 18828.

It is an arithmetic number, because the mean of its divisors is an integer number (262766).

2^2252220 is an apocalyptic number.

2252220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2252220 is an abundant number, since it is smaller than the sum of its proper divisors (4054164).

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

2252220 is a wasteful number, since it uses less digits than its factorization.

2252220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37549 (or 37547 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 15.

The square root of 2252220 is about 1500.7398175567. The cubic root of 2252220 is about 131.0801521805.

Adding to 2252220 its reverse (222522), we get a palindrome (2474742).

It can be divided in two parts, 225 and 2220, that multiplied together give a triangular number (499500 = T₉₉₉).

The spelling of 2252220 in words is "two million, two hundred fifty-two thousand, two hundred twenty".