90928 has 10 divisors (see below), whose sum is σ = 176204. Its totient is φ = 45456.

The previous prime is 90917. The next prime is 90931. The reversal of 90928 is 82909.

90928 = 37² + 38² + ... + 68².

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 90896 and 90905.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2826 + ... + 2857.

2⁹⁰⁹²⁸ is an apocalyptic number.

It is an amenable number.

90928 is a deficient number, since it is larger than the sum of its proper divisors (85276).

90928 is a wasteful number, since it uses less digits than its factorization.

90928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5691 (or 5685 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 90928 is about 301.5427001272. The cubic root of 90928 is about 44.9675486200.

It can be divided in two parts, 909 and 28, that multiplied together give a palindrome (25452).

The spelling of 90928 in words is "ninety thousand, nine hundred twenty-eight".