858492648 has 128 divisors (see below), whose sum is σ = 2637868800. Its totient is φ = 256981248.

The previous prime is 858492631. The next prime is 858492653. The reversal of 858492648 is 846294858.

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

It is a junction number, because it is equal to n+sod(n) for n = 858492594 and 858492603.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 99765 + ... + 108027.

It is an arithmetic number, because the mean of its divisors is an integer number (20608350).

Almost surely, 2^858492648 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 858492648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1318934400).

858492648 is an abundant number, since it is smaller than the sum of its proper divisors (1779376152).

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

858492648 is a wasteful number, since it uses less digits than its factorization.

858492648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8328 (or 8318 counting only the distinct ones).

The product of its digits is 4423680, while the sum is 54.

The square root of 858492648 is about 29300.0451876785. The cubic root of 858492648 is about 950.4126178051.

The spelling of 858492648 in words is "eight hundred fifty-eight million, four hundred ninety-two thousand, six hundred forty-eight".