115400290 has 32 divisors (see below), whose sum is σ = 215654400. Its totient is φ = 44414400.

The previous prime is 115400279. The next prime is 115400291. The reversal of 115400290 is 92004511.

It is a super-3 number, since 3×115400290³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (115400291) 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, 58236 + ... + 60184.

It is an arithmetic number, because the mean of its divisors is an integer number (6739200).

Almost surely, 2^115400290 is an apocalyptic number.

115400290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

115400290 is a deficient number, since it is larger than the sum of its proper divisors (100254110).

115400290 is a wasteful number, since it uses less digits than its factorization.

115400290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2178.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 115400290 is about 10742.4526994537. The cubic root of 115400290 is about 486.8579880990.

The spelling of 115400290 in words is "one hundred fifteen million, four hundred thousand, two hundred ninety".