2261512236 has 48 divisors (see below), whose sum is σ = 5309597664. Its totient is φ = 749177856.

The previous prime is 2261512229. The next prime is 2261512247. The reversal of 2261512236 is 6322151622.

It is a super-2 number, since 2×2261512236² = 10228875187155439392, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1646446 + ... + 1647818.

It is an arithmetic number, because the mean of its divisors is an integer number (110616618).

Almost surely, 2^2261512236 is an apocalyptic number.

It is an amenable number.

2261512236 is an abundant number, since it is smaller than the sum of its proper divisors (3048085428).

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

2261512236 is a wasteful number, since it uses less digits than its factorization.

2261512236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2130 (or 2128 counting only the distinct ones).

The product of its digits is 8640, while the sum is 30.

The square root of 2261512236 is about 47555.3596979352. The cubic root of 2261512236 is about 1312.6017550860.

Adding to 2261512236 its reverse (6322151622), we get a palindrome (8583663858).

The spelling of 2261512236 in words is "two billion, two hundred sixty-one million, five hundred twelve thousand, two hundred thirty-six".