90288465 has 16 divisors (see below), whose sum is σ = 145043136. Its totient is φ = 47960000.

The previous prime is 90288439. The next prime is 90288503. The reversal of 90288465 is 56488209.

It is not a de Polignac number, because 90288465 - 2¹⁴ = 90272081 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, 8226 + ... + 15755.

It is an arithmetic number, because the mean of its divisors is an integer number (9065196).

Almost surely, 2^90288465 is an apocalyptic number.

It is an amenable number.

90288465 is a deficient number, since it is larger than the sum of its proper divisors (54754671).

90288465 is a wasteful number, since it uses less digits than its factorization.

90288465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24240.

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 90288465 is about 9502.0242580200. The cubic root of 90288465 is about 448.6187523363.

The spelling of 90288465 in words is "ninety million, two hundred eighty-eight thousand, four hundred sixty-five".