115861212 has 48 divisors (see below), whose sum is σ = 313447680. Its totient is φ = 36940464.

The previous prime is 115861199. The next prime is 115861217. The reversal of 115861212 is 212168511.

It is a super-2 number, since 2×115861212² = 26847640892217888, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115861217) 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, 20838 + ... + 25805.

It is an arithmetic number, because the mean of its divisors is an integer number (6530160).

Almost surely, 2^115861212 is an apocalyptic number.

115861212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

115861212 is an abundant number, since it is smaller than the sum of its proper divisors (197586468).

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

115861212 is a wasteful number, since it uses less digits than its factorization.

115861212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46679 (or 46671 counting only the distinct ones).

The product of its digits is 960, while the sum is 27.

The square root of 115861212 is about 10763.8846147662. The cubic root of 115861212 is about 487.5053159184.

The spelling of 115861212 in words is "one hundred fifteen million, eight hundred sixty-one thousand, two hundred twelve".