858524272 has 40 divisors (see below), whose sum is σ = 1756832000. Its totient is φ = 405300672.

The previous prime is 858524239. The next prime is 858524273. The reversal of 858524272 is 272425858.

It is a super-2 number, since 2×858524272² = 1474127851226259968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (858524273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88729 + ... + 97927.

It is an arithmetic number, because the mean of its divisors is an integer number (43920800).

Almost surely, 2^858524272 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 858524272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (878416000).

858524272 is an abundant number, since it is smaller than the sum of its proper divisors (898307728).

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

858524272 is a wasteful number, since it uses less digits than its factorization.

858524272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9533 (or 9527 counting only the distinct ones).

The product of its digits is 358400, while the sum is 43.

The square root of 858524272 is about 29300.5848405795. The cubic root of 858524272 is about 950.4242876700.

The spelling of 858524272 in words is "eight hundred fifty-eight million, five hundred twenty-four thousand, two hundred seventy-two".