115227920 has 20 divisors (see below), whose sum is σ = 267905100. Its totient is φ = 46091136.

The previous prime is 115227919. The next prime is 115227923. The reversal of 115227920 is 29722511.

It can be written as a sum of positive squares in 2 ways, for example, as 53699584 + 61528336 = 7328^2 + 7844^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (115227923) 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, 720095 + ... + 720254.

It is an arithmetic number, because the mean of its divisors is an integer number (13395255).

Almost surely, 2^115227920 is an apocalyptic number.

115227920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115227920 is an abundant number, since it is smaller than the sum of its proper divisors (152677180).

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

115227920 is a wasteful number, since it uses less digits than its factorization.

115227920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1440362 (or 1440356 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 115227920 is about 10734.4268594089. The cubic root of 115227920 is about 486.6154655169.

The spelling of 115227920 in words is "one hundred fifteen million, two hundred twenty-seven thousand, nine hundred twenty".