89305281 has 64 divisors (see below), whose sum is σ = 149712640. Its totient is φ = 52254720.

The previous prime is 89305277. The next prime is 89305283. The reversal of 89305281 is 18250398.

It is not a de Polignac number, because 89305281 - 2² = 89305277 is a prime.

It is a super-2 number, since 2×89305281² = 15950866428977922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89305283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 920625 + ... + 920721.

It is an arithmetic number, because the mean of its divisors is an integer number (2339260).

Almost surely, 2^89305281 is an apocalyptic number.

It is an amenable number.

89305281 is a deficient number, since it is larger than the sum of its proper divisors (60407359).

89305281 is a wasteful number, since it uses less digits than its factorization.

89305281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223 (or 217 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 89305281 is about 9450.1471417116. The cubic root of 89305281 is about 446.9844145730.

The spelling of 89305281 in words is "eighty-nine million, three hundred five thousand, two hundred eighty-one".