115280290 has 8 divisors (see below), whose sum is σ = 207504540. Its totient is φ = 46112112.

The previous prime is 115280287. The next prime is 115280293. The reversal of 115280290 is 92082511.

It is an interprime number because it is at equal distance from previous prime (115280287) and next prime (115280293).

It can be written as a sum of positive squares in 2 ways, for example, as 113145769 + 2134521 = 10637^2 + 1461^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (115280293) 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, 5764005 + ... + 5764024.

Almost surely, 2^115280290 is an apocalyptic number.

115280290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

115280290 is a deficient number, since it is larger than the sum of its proper divisors (92224250).

115280290 is a wasteful number, since it uses less digits than its factorization.

115280290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11528036.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 115280290 is about 10736.8659300561. The cubic root of 115280290 is about 486.6891750604.

The spelling of 115280290 in words is "one hundred fifteen million, two hundred eighty thousand, two hundred ninety".