115222272 has 144 divisors (see below), whose sum is σ = 349671168. Its totient is φ = 33341440.

The previous prime is 115222271. The next prime is 115222273. The reversal of 115222272 is 272222511.

It is an interprime number because it is at equal distance from previous prime (115222271) and next prime (115222273).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115222271) 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, 194008 + ... + 194600.

It is an arithmetic number, because the mean of its divisors is an integer number (2428272).

Almost surely, 2^115222272 is an apocalyptic number.

115222272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 115222272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174835584).

115222272 is an abundant number, since it is smaller than the sum of its proper divisors (234448896).

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

115222272 is a wasteful number, since it uses less digits than its factorization.

115222272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646 (or 632 counting only the distinct ones).

The product of its digits is 1120, while the sum is 24.

The square root of 115222272 is about 10734.1637773978. The cubic root of 115222272 is about 486.6075147556.

Adding to 115222272 its reverse (272222511), we get a palindrome (387444783).

The spelling of 115222272 in words is "one hundred fifteen million, two hundred twenty-two thousand, two hundred seventy-two".