858372240 has 160 divisors (see below), whose sum is σ = 2913063552. Its totient is φ = 207360000.

The previous prime is 858372161. The next prime is 858372241. The reversal of 858372240 is 42273858.

It is not an unprimeable number, because it can be changed into a prime (858372241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1427940 + ... + 1428540.

Almost surely, 2^858372240 is an apocalyptic number.

858372240 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 858372240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1456531776).

858372240 is an abundant number, since it is smaller than the sum of its proper divisors (2054691312).

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

858372240 is a wasteful number, since it uses less digits than its factorization.

858372240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1169 (or 1163 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 39.

The square root of 858372240 is about 29297.9903747680. The cubic root of 858372240 is about 950.3681823118.

The spelling of 858372240 in words is "eight hundred fifty-eight million, three hundred seventy-two thousand, two hundred forty".