861612232 has 32 divisors (see below), whose sum is σ = 1750908600. Its totient is φ = 395126784.

The previous prime is 861612221. The next prime is 861612239. The reversal of 861612232 is 232216168.

It can be written as a sum of positive squares in 4 ways, for example, as 404251236 + 457360996 = 20106^2 + 21386^2 .

It is a junction number, because it is equal to n+sod(n) for n = 861612194 and 861612203.

It is not an unprimeable number, because it can be changed into a prime (861612239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10057 + ... + 42712.

Almost surely, 2^861612232 is an apocalyptic number.

It is an amenable number.

861612232 is an abundant number, since it is smaller than the sum of its proper divisors (889296368).

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

861612232 is a wasteful number, since it uses less digits than its factorization.

861612232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52945 (or 52941 counting only the distinct ones).

The product of its digits is 6912, while the sum is 31.

The square root of 861612232 is about 29353.2320537279. The cubic root of 861612232 is about 951.5624268990.

The spelling of 861612232 in words is "eight hundred sixty-one million, six hundred twelve thousand, two hundred thirty-two".