861924222 has 24 divisors (see below), whose sum is σ = 1913052960. Its totient is φ = 280300320.

The previous prime is 861924199. The next prime is 861924223. The reversal of 861924222 is 222429168.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (861924223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 583222 + ... + 584697.

It is an arithmetic number, because the mean of its divisors is an integer number (79710540).

Almost surely, 2^861924222 is an apocalyptic number.

861924222 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

861924222 is an abundant number, since it is smaller than the sum of its proper divisors (1051128738).

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

861924222 is a wasteful number, since it uses less digits than its factorization.

861924222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1167968 (or 1167965 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 861924222 is about 29358.5459789820. The cubic root of 861924222 is about 951.6772667015.

The spelling of 861924222 in words is "eight hundred sixty-one million, nine hundred twenty-four thousand, two hundred twenty-two".