2257770 has 64 divisors (see below), whose sum is σ = 6065280. Its totient is φ = 534528.

The previous prime is 2257763. The next prime is 2257771. The reversal of 2257770 is 777522.

2257770 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2257771) 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 31 ways as a sum of consecutive naturals, for example, 9574 + ... + 9806.

It is an arithmetic number, because the mean of its divisors is an integer number (94770).

2^2257770 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2257770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3032640).

2257770 is an abundant number, since it is smaller than the sum of its proper divisors (3807510).

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

2257770 is a wasteful number, since it uses less digits than its factorization.

2257770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279.

The product of its (nonzero) digits is 6860, while the sum is 30.

The square root of 2257770 is about 1502.5877678192. The cubic root of 2257770 is about 131.1877346381.

The spelling of 2257770 in words is "two million, two hundred fifty-seven thousand, seven hundred seventy".