89280776 has 32 divisors (see below), whose sum is σ = 182468160. Its totient is φ = 40706112.

The previous prime is 89280773. The next prime is 89280797. The reversal of 89280776 is 67708298.

It is a self number, because there is not a number n which added to its sum of digits gives 89280776.

It is not an unprimeable number, because it can be changed into a prime (89280773) 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, 3461 + ... + 13803.

It is an arithmetic number, because the mean of its divisors is an integer number (5702130).

Almost surely, 2^89280776 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 89280776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91234080).

89280776 is an abundant number, since it is smaller than the sum of its proper divisors (93187384).

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

89280776 is a wasteful number, since it uses less digits than its factorization.

89280776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10445 (or 10441 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 47.

The square root of 89280776 is about 9448.8505120993. The cubic root of 89280776 is about 446.9435272744.

The spelling of 89280776 in words is "eighty-nine million, two hundred eighty thousand, seven hundred seventy-six".