85998288 has 80 divisors (see below), whose sum is σ = 235806336. Its totient is φ = 26949120.

The previous prime is 85998287. The next prime is 85998299. The reversal of 85998288 is 88289958.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85998287) 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, 66706 + ... + 67982.

Almost surely, 2^85998288 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 85998288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117903168).

85998288 is an abundant number, since it is smaller than the sum of its proper divisors (149808048).

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

85998288 is a wasteful number, since it uses less digits than its factorization.

85998288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1372 (or 1366 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 57.

The square root of 85998288 is about 9273.5261901825. The cubic root of 85998288 is about 441.3975672416.

The spelling of 85998288 in words is "eighty-five million, nine hundred ninety-eight thousand, two hundred eighty-eight".