2261242356 has 24 divisors (see below), whose sum is σ = 5284330464. Its totient is φ = 752590560.

The previous prime is 2261242343. The next prime is 2261242363. The reversal of 2261242356 is 6532421622.

It is a happy number.

It is a super-2 number, since 2×2261242356² = 10226433985136861472, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136450 + ... + 152121.

It is an arithmetic number, because the mean of its divisors is an integer number (220180436).

Almost surely, 2^2261242356 is an apocalyptic number.

It is an amenable number.

2261242356 is an abundant number, since it is smaller than the sum of its proper divisors (3023088108).

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

2261242356 is a wasteful number, since it uses less digits than its factorization.

2261242356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289231 (or 289229 counting only the distinct ones).

The product of its digits is 34560, while the sum is 33.

The square root of 2261242356 is about 47552.5220782242. The cubic root of 2261242356 is about 1312.5495394272.

Adding to 2261242356 its reverse (6532421622), we get a palindrome (8793663978).

The spelling of 2261242356 in words is "two billion, two hundred sixty-one million, two hundred forty-two thousand, three hundred fifty-six".