89855520 has 96 divisors (see below), whose sum is σ = 285405120. Its totient is φ = 23761920.

The previous prime is 89855483. The next prime is 89855527. The reversal of 89855520 is 2555898.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (89855527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62166 + ... + 63594.

It is an arithmetic number, because the mean of its divisors is an integer number (2972970).

Almost surely, 2^89855520 is an apocalyptic number.

89855520 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 89855520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142702560).

89855520 is an abundant number, since it is smaller than the sum of its proper divisors (195549600).

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

89855520 is a wasteful number, since it uses less digits than its factorization.

89855520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1578 (or 1570 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 42.

The square root of 89855520 is about 9479.2151573851. The cubic root of 89855520 is about 447.9005412715.

The spelling of 89855520 in words is "eighty-nine million, eight hundred fifty-five thousand, five hundred twenty".