858746880 has 208 divisors, whose sum is σ = 3054915360. Its totient is φ = 228851712.

The previous prime is 858746873. The next prime is 858746881. The reversal of 858746880 is 88647858.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (858746881) 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, 552184 + ... + 553736.

Almost surely, 2^858746880 is an apocalyptic number.

858746880 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 858746880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1527457680).

858746880 is an abundant number, since it is smaller than the sum of its proper divisors (2196168480).

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

858746880 is a wasteful number, since it uses less digits than its factorization.

858746880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1591 (or 1563 counting only the distinct ones).

The product of its (nonzero) digits is 3440640, while the sum is 54.

The square root of 858746880 is about 29304.3832898766. The cubic root of 858746880 is about 950.5064262005.

The spelling of 858746880 in words is "eight hundred fifty-eight million, seven hundred forty-six thousand, eight hundred eighty".