858002250 has 192 divisors, whose sum is σ = 2562603264. Its totient is φ = 190512000.

The previous prime is 858002227. The next prime is 858002261. The reversal of 858002250 is 52200858.

It is a super-2 number, since 2×858002250² = 1472335722010125000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1359435 + ... + 1360065.

It is an arithmetic number, because the mean of its divisors is an integer number (13346892).

Almost surely, 2^858002250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 858002250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1281301632).

858002250 is an abundant number, since it is smaller than the sum of its proper divisors (1704601014).

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

858002250 is a wasteful number, since it uses less digits than its factorization.

858002250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702 (or 685 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 30.

The square root of 858002250 is about 29291.6754385952. The cubic root of 858002250 is about 950.2316148100.

The spelling of 858002250 in words is "eight hundred fifty-eight million, two thousand, two hundred fifty".