858426860 has 12 divisors (see below), whose sum is σ = 1802696448. Its totient is φ = 343370736.

The previous prime is 858426857. The next prime is 858426889. The reversal of 858426860 is 68624858.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21460652 + ... + 21460691.

It is an arithmetic number, because the mean of its divisors is an integer number (150224704).

Almost surely, 2^858426860 is an apocalyptic number.

It is an amenable number.

858426860 is an abundant number, since it is smaller than the sum of its proper divisors (944269588).

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

858426860 is a wasteful number, since it uses less digits than its factorization.

858426860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42921352 (or 42921350 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 47.

The square root of 858426860 is about 29298.9225057851. The cubic root of 858426860 is about 950.3883398482.

The spelling of 858426860 in words is "eight hundred fifty-eight million, four hundred twenty-six thousand, eight hundred sixty".