2281770 has 56 divisors (see below), whose sum is σ = 6177636. Its totient is φ = 606528.

The previous prime is 2281751. The next prime is 2281771. The reversal of 2281770 is 771822.

It can be written as a sum of positive squares in 2 ways, for example, as 1896129 + 385641 = 1377^2 + 621^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (2281771) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 7134 + ... + 7446.

2^2281770 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2281770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3088818).

2281770 is an abundant number, since it is smaller than the sum of its proper divisors (3895866).

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

2281770 is an equidigital number, since it uses as much as digits as its factorization.

2281770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338 (or 323 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

The square root of 2281770 is about 1510.5528789155. The cubic root of 2281770 is about 131.6509372511.

The spelling of 2281770 in words is "two million, two hundred eighty-one thousand, seven hundred seventy".