89105820 has 48 divisors (see below), whose sum is σ = 262631040. Its totient is φ = 22510656.

The previous prime is 89105813. The next prime is 89105827. The reversal of 89105820 is 2850198.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (89105813) and next prime (89105827).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89105827) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37942 + ... + 40221.

It is an arithmetic number, because the mean of its divisors is an integer number (5471480).

Almost surely, 2^89105820 is an apocalyptic number.

It is an amenable number.

89105820 is an abundant number, since it is smaller than the sum of its proper divisors (173525220).

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

89105820 is a wasteful number, since it uses less digits than its factorization.

89105820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78194 (or 78192 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 33.

The square root of 89105820 is about 9439.5879147344. The cubic root of 89105820 is about 446.6513905322.

The spelling of 89105820 in words is "eighty-nine million, one hundred five thousand, eight hundred twenty".