89828581 has 8 divisors (see below), whose sum is σ = 92147328. Its totient is φ = 87516000.

The previous prime is 89828579. The next prime is 89828597. The reversal of 89828581 is 18582898.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 89828581 - 2¹ = 89828579 is a prime.

It is a super-2 number, since 2×89828581² = 16138347928947122, 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 (89828521) 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, 47076 + ... + 48946.

It is an arithmetic number, because the mean of its divisors is an integer number (11518416).

Almost surely, 2^89828581 is an apocalyptic number.

It is an amenable number.

89828581 is a deficient number, since it is larger than the sum of its proper divisors (2318747).

89828581 is a wasteful number, since it uses less digits than its factorization.

89828581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3083.

The product of its digits is 368640, while the sum is 49.

The square root of 89828581 is about 9477.7940998948. The cubic root of 89828581 is about 447.8557760800.

It can be divided in two parts, 89828 and 581, that added together give a palindrome (90409).

The spelling of 89828581 in words is "eighty-nine million, eight hundred twenty-eight thousand, five hundred eighty-one".