91285338 has 16 divisors (see below), whose sum is σ = 184278240. Its totient is φ = 30143856.

The previous prime is 91285307. The next prime is 91285357. The reversal of 91285338 is 83358219.

It is a junction number, because it is equal to n+sod(n) for n = 91285296 and 91285305.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70453 + ... + 71736.

It is an arithmetic number, because the mean of its divisors is an integer number (11517390).

Almost surely, 2^91285338 is an apocalyptic number.

91285338 is an abundant number, since it is smaller than the sum of its proper divisors (92992902).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91285338 is a wasteful number, since it uses less digits than its factorization.

91285338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142301.

The product of its digits is 51840, while the sum is 39.

The square root of 91285338 is about 9554.3360836847. The cubic root of 91285338 is about 450.2637762164.

The spelling of 91285338 in words is "ninety-one million, two hundred eighty-five thousand, three hundred thirty-eight".