115213572 has 36 divisors (see below), whose sum is σ = 291559996. Its totient is φ = 38361600.

The previous prime is 115213561. The next prime is 115213603. The reversal of 115213572 is 275312511.

It can be written as a sum of positive squares in 2 ways, for example, as 34644996 + 80568576 = 5886^2 + 8976^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63072 + ... + 64872.

Almost surely, 2^115213572 is an apocalyptic number.

115213572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

115213572 is an abundant number, since it is smaller than the sum of its proper divisors (176346424).

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

115213572 is a wasteful number, since it uses less digits than its factorization.

115213572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3588 (or 3583 counting only the distinct ones).

The product of its digits is 2100, while the sum is 27.

The square root of 115213572 is about 10733.7585215990. The cubic root of 115213572 is about 486.5952671468.

The spelling of 115213572 in words is "one hundred fifteen million, two hundred thirteen thousand, five hundred seventy-two".