89806820 has 24 divisors (see below), whose sum is σ = 188811000. Its totient is φ = 35881472.

The previous prime is 89806813. The next prime is 89806841. The reversal of 89806820 is 2860898.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1784896 + 88021924 = 1336^2 + 9382^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20156 + ... + 24204.

It is an arithmetic number, because the mean of its divisors is an integer number (7867125).

Almost surely, 2^89806820 is an apocalyptic number.

It is an amenable number.

89806820 is an abundant number, since it is smaller than the sum of its proper divisors (99004180).

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

89806820 is a wasteful number, since it uses less digits than its factorization.

89806820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5167 (or 5165 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 41.

The square root of 89806820 is about 9476.6460311652. The cubic root of 89806820 is about 447.8196087618.

The spelling of 89806820 in words is "eighty-nine million, eight hundred six thousand, eight hundred twenty".