858880 has 72 divisors (see below), whose sum is σ = 2281104. Its totient is φ = 307200.

The previous prime is 858877. The next prime is 858883. The reversal of 858880 is 88858.

It is an interprime number because it is at equal distance from previous prime (858877) and next prime (858883).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (858883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14050 + ... + 14110.

It is an arithmetic number, because the mean of its divisors is an integer number (31682).

2⁸⁵⁸⁸⁸⁰ is an apocalyptic number.

858880 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 858880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1140552).

858880 is an abundant number, since it is smaller than the sum of its proper divisors (1422224).

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

858880 is a wasteful number, since it uses less digits than its factorization.

858880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93 (or 79 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 37.

The square root of 858880 is about 926.7577892848. The cubic root of 858880 is about 95.0555538413.

It can be divided in two parts, 8588 and 80, that added together give a palindrome (8668).

The spelling of 858880 in words is "eight hundred fifty-eight thousand, eight hundred eighty".