89890236 has 60 divisors (see below), whose sum is σ = 235906440. Its totient is φ = 29846880.

The previous prime is 89890231. The next prime is 89890243. The reversal of 89890236 is 63209898.

It is a junction number, because it is equal to n+sod(n) for n = 89890191 and 89890200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89890231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 136075 + ... + 136733.

It is an arithmetic number, because the mean of its divisors is an integer number (3931774).

Almost surely, 2^89890236 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 89890236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117953220).

89890236 is an abundant number, since it is smaller than the sum of its proper divisors (146016204).

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

89890236 is a wasteful number, since it uses less digits than its factorization.

89890236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1096 (or 1085 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 89890236 is about 9481.0461448091. The cubic root of 89890236 is about 447.9582165006.

The spelling of 89890236 in words is "eighty-nine million, eight hundred ninety thousand, two hundred thirty-six".