858472356 has 72 divisors (see below), whose sum is σ = 2335931136. Its totient is φ = 244668480.

The previous prime is 858472319. The next prime is 858472379. The reversal of 858472356 is 653274858.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 269485 + ... + 272651.

It is an arithmetic number, because the mean of its divisors is an integer number (32443488).

Almost surely, 2^858472356 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 858472356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1167965568).

858472356 is an abundant number, since it is smaller than the sum of its proper divisors (1477458780).

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

858472356 is a wasteful number, since it uses less digits than its factorization.

858472356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3649 (or 3640 counting only the distinct ones).

The product of its digits is 1612800, while the sum is 48.

The square root of 858472356 is about 29299.6989063028. The cubic root of 858472356 is about 950.4051295155.

The spelling of 858472356 in words is "eight hundred fifty-eight million, four hundred seventy-two thousand, three hundred fifty-six".