115213636 has 24 divisors (see below), whose sum is σ = 209001240. Its totient is φ = 55573280.

The previous prime is 115213603. The next prime is 115213643. The reversal of 115213636 is 636312511.

It can be written as a sum of positive squares in 4 ways, for example, as 9000000 + 106213636 = 3000^2 + 10306^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96966 + ... + 98146.

It is an arithmetic number, because the mean of its divisors is an integer number (8708385).

Almost surely, 2^115213636 is an apocalyptic number.

It is an amenable number.

115213636 is a deficient number, since it is larger than the sum of its proper divisors (93787604).

115213636 is an equidigital number, since it uses as much as digits as its factorization.

115213636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1272 (or 1212 counting only the distinct ones).

The product of its digits is 3240, while the sum is 28.

The square root of 115213636 is about 10733.7615028470. The cubic root of 115213636 is about 486.5953572464.

The spelling of 115213636 in words is "one hundred fifteen million, two hundred thirteen thousand, six hundred thirty-six".