91291282 has 8 divisors (see below), whose sum is σ = 137505852. Its totient is φ = 45456000.

The previous prime is 91291273. The next prime is 91291289. The reversal of 91291282 is 28219219.

It can be written as a sum of positive squares in 2 ways, for example, as 90079081 + 1212201 = 9491^2 + 1101^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×91291282³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (91291289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94219 + ... + 95182.

Almost surely, 2^91291282 is an apocalyptic number.

91291282 is a deficient number, since it is larger than the sum of its proper divisors (46214570).

91291282 is a wasteful number, since it uses less digits than its factorization.

91291282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189644.

The product of its digits is 5184, while the sum is 34.

The square root of 91291282 is about 9554.6471415746. The cubic root of 91291282 is about 450.2735489060.

The spelling of 91291282 in words is "ninety-one million, two hundred ninety-one thousand, two hundred eighty-two".