89380836820 has 96 divisors (see below), whose sum is σ = 217169600256. Its totient is φ = 30579225600.

The previous prime is 89380836731. The next prime is 89380836823. The reversal of 89380836820 is 2863808398.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89380836823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 163872 + ... + 453448.

It is an arithmetic number, because the mean of its divisors is an integer number (2262183336).

Almost surely, 2^89380836820 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 89380836820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108584800128).

89380836820 is an abundant number, since it is smaller than the sum of its proper divisors (127788763436).

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

89380836820 is a wasteful number, since it uses less digits than its factorization.

89380836820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289681 (or 289679 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 55.

The spelling of 89380836820 in words is "eighty-nine billion, three hundred eighty million, eight hundred thirty-six thousand, eight hundred twenty".