115651720 has 16 divisors (see below), whose sum is σ = 260216460. Its totient is φ = 46260672.

The previous prime is 115651717. The next prime is 115651729. The reversal of 115651720 is 27156511.

It can be written as a sum of positive squares in 2 ways, for example, as 115218756 + 432964 = 10734^2 + 658^2 .

It is not an unprimeable number, because it can be changed into a prime (115651729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1445607 + ... + 1445686.

Almost surely, 2^115651720 is an apocalyptic number.

115651720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115651720 is an abundant number, since it is smaller than the sum of its proper divisors (144564740).

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

115651720 is a wasteful number, since it uses less digits than its factorization.

115651720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2891304 (or 2891300 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 28.

The square root of 115651720 is about 10754.1489667942. The cubic root of 115651720 is about 487.2113145076.

The spelling of 115651720 in words is "one hundred fifteen million, six hundred fifty-one thousand, seven hundred twenty".