90278875 has 16 divisors (see below), whose sum is σ = 114802272. Its totient is φ = 70855200.

The previous prime is 90278873. The next prime is 90278893. The reversal of 90278875 is 57887209.

It is not a de Polignac number, because 90278875 - 2¹ = 90278873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90278873) 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, 189 + ... + 13438.

It is an arithmetic number, because the mean of its divisors is an integer number (7175142).

Almost surely, 2^90278875 is an apocalyptic number.

90278875 is a deficient number, since it is larger than the sum of its proper divisors (24523397).

90278875 is a wasteful number, since it uses less digits than its factorization.

90278875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13695 (or 13685 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 46.

The square root of 90278875 is about 9501.5196153036. The cubic root of 90278875 is about 448.6028684093.

The spelling of 90278875 in words is "ninety million, two hundred seventy-eight thousand, eight hundred seventy-five".