89442240 has 56 divisors (see below), whose sum is σ = 283982160. Its totient is φ = 23851008.

The previous prime is 89442229. The next prime is 89442259. The reversal of 89442240 is 4224498.

It is a congruent number.

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, 45625 + ... + 47544.

It is an arithmetic number, because the mean of its divisors is an integer number (5071110).

Almost surely, 2^89442240 is an apocalyptic number.

89442240 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

89442240 is an abundant number, since it is smaller than the sum of its proper divisors (194539920).

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

89442240 is a wasteful number, since it uses less digits than its factorization.

89442240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93189 (or 93179 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 89442240 is about 9457.3907606697. The cubic root of 89442240 is about 447.2127969985.

It can be divided in two parts, 894 and 42240, that added together give a palindrome (43134).

The spelling of 89442240 in words is "eighty-nine million, four hundred forty-two thousand, two hundred forty".