90288267 has 4 divisors (see below), whose sum is σ = 120384360. Its totient is φ = 60192176.

The previous prime is 90288259. The next prime is 90288277. The reversal of 90288267 is 76288209.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 90288267 - 2³ = 90288259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90288217) 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, 15048042 + ... + 15048047.

It is an arithmetic number, because the mean of its divisors is an integer number (30096090).

Almost surely, 2^90288267 is an apocalyptic number.

90288267 is a deficient number, since it is larger than the sum of its proper divisors (30096093).

90288267 is a wasteful number, since it uses less digits than its factorization.

90288267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30096092.

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 90288267 is about 9502.0138391817. The cubic root of 90288267 is about 448.6184244001.

The spelling of 90288267 in words is "ninety million, two hundred eighty-eight thousand, two hundred sixty-seven".