90826 has 4 divisors (see below), whose sum is σ = 136242. Its totient is φ = 45412.

The previous prime is 90823. The next prime is 90833. The reversal of 90826 is 62809.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62809 = 107 ⋅587.

It can be written as a sum of positive squares in only one way, i.e., 90601 + 225 = 301^2 + 15^2 .

It is a plaindrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 90826.

It is not an unprimeable number, because it can be changed into a prime (90821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22705 + ... + 22708.

2⁹⁰⁸²⁶ is an apocalyptic number.

90826 is a deficient number, since it is larger than the sum of its proper divisors (45416).

90826 is a wasteful number, since it uses less digits than its factorization.

90826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45415.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 90826 is about 301.3735223937. The cubic root of 90826 is about 44.9507279631.

The spelling of 90826 in words is "ninety thousand, eight hundred twenty-six".