90280115 has 16 divisors (see below), whose sum is σ = 120748320. Its totient is φ = 64396800.

The previous prime is 90280079. The next prime is 90280133. The reversal of 90280115 is 51108209.

It is a happy number.

It is not a de Polignac number, because 90280115 - 2⁶ = 90280051 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26336 + ... + 29565.

It is an arithmetic number, because the mean of its divisors is an integer number (7546770).

Almost surely, 2^90280115 is an apocalyptic number.

90280115 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

90280115 is a deficient number, since it is larger than the sum of its proper divisors (30468205).

90280115 is a wasteful number, since it uses less digits than its factorization.

90280115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55942.

The product of its (nonzero) digits is 720, while the sum is 26.

The square root of 90280115 is about 9501.5848677997. The cubic root of 90280115 is about 448.6049222859.

The spelling of 90280115 in words is "ninety million, two hundred eighty thousand, one hundred fifteen".