115133540 has 24 divisors (see below), whose sum is σ = 254506560. Its totient is φ = 43629408.

The previous prime is 115133531. The next prime is 115133549. The reversal of 115133540 is 45331511.

It is an interprime number because it is at equal distance from previous prime (115133531) and next prime (115133549).

It is not an unprimeable number, because it can be changed into a prime (115133549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151112 + ... + 151871.

It is an arithmetic number, because the mean of its divisors is an integer number (10604440).

Almost surely, 2^115133540 is an apocalyptic number.

115133540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115133540 is an abundant number, since it is smaller than the sum of its proper divisors (139373020).

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

115133540 is a wasteful number, since it uses less digits than its factorization.

115133540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303011 (or 303009 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 115133540 is about 10730.0298228849. The cubic root of 115133540 is about 486.4825714739.

The spelling of 115133540 in words is "one hundred fifteen million, one hundred thirty-three thousand, five hundred forty".