91818282 has 16 divisors (see below), whose sum is σ = 184169952. Its totient is φ = 30517200.

The previous prime is 91818281. The next prime is 91818283. The reversal of 91818282 is 28281819.

It is an interprime number because it is at equal distance from previous prime (91818281) and next prime (91818283).

It is a self number, because there is not a number n which added to its sum of digits gives 91818282.

It is not an unprimeable number, because it can be changed into a prime (91818281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19969 + ... + 24132.

It is an arithmetic number, because the mean of its divisors is an integer number (11510622).

Almost surely, 2^91818282 is an apocalyptic number.

91818282 is an abundant number, since it is smaller than the sum of its proper divisors (92351670).

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

91818282 is a wasteful number, since it uses less digits than its factorization.

91818282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44453.

The product of its digits is 18432, while the sum is 39.

The square root of 91818282 is about 9582.1856588150. The cubic root of 91818282 is about 451.1383230008.

The spelling of 91818282 in words is "ninety-one million, eight hundred eighteen thousand, two hundred eighty-two".