115971372 has 192 divisors, whose sum is σ = 350945280. Its totient is φ = 32788800.

The previous prime is 115971353. The next prime is 115971389. The reversal of 115971372 is 273179511.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1730883 + ... + 1730949.

It is an arithmetic number, because the mean of its divisors is an integer number (1827840).

Almost surely, 2^115971372 is an apocalyptic number.

115971372 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 115971372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175472640).

115971372 is an abundant number, since it is smaller than the sum of its proper divisors (234973908).

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

115971372 is a wasteful number, since it uses less digits than its factorization.

115971372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169 (or 161 counting only the distinct ones).

The product of its digits is 13230, while the sum is 36.

The square root of 115971372 is about 10769.0005107252. Note that the first 3 decimals coincide. The cubic root of 115971372 is about 487.6597724828.

The spelling of 115971372 in words is "one hundred fifteen million, nine hundred seventy-one thousand, three hundred seventy-two".