2261370 has 32 divisors (see below), whose sum is σ = 5556672. Its totient is φ = 588672.

The previous prime is 2261353. The next prime is 2261377. The reversal of 2261370 is 731622.

It is a happy number.

It is a super-2 number, since 2×2261370² = 10227588553800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2261377) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 414 + ... + 2166.

It is an arithmetic number, because the mean of its divisors is an integer number (173646).

2^2261370 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2261370, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2778336).

2261370 is an abundant number, since it is smaller than the sum of its proper divisors (3295302).

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

2261370 is a wasteful number, since it uses less digits than its factorization.

2261370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1806.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 2261370 is about 1503.7852240264. The cubic root of 2261370 is about 131.2574236164.

Adding to 2261370 its reverse (731622), we get a palindrome (2992992).

It can be divided in two parts, 226 and 1370, that added together give a triangular number (1596 = T₅₆).

The spelling of 2261370 in words is "two million, two hundred sixty-one thousand, three hundred seventy".