1086431872 has 48 divisors (see below), whose sum is σ = 2243155950. Its totient is φ = 523514880.

The previous prime is 1086431849. The next prime is 1086431891. The reversal of 1086431872 is 2781346801.

It can be written as a sum of positive squares in 3 ways, for example, as 851238976 + 235192896 = 29176^2 + 15336^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2007922 + ... + 2008462.

Almost surely, 2^1086431872 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 1086431872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1121577975).

1086431872 is an abundant number, since it is smaller than the sum of its proper divisors (1156724078).

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

1086431872 is an frugal number, since it uses more digits than its factorization.

1086431872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1125 (or 572 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 1086431872 is about 32961.0660021790. The cubic root of 1086431872 is about 1028.0182689401.

The spelling of 1086431872 in words is "one billion, eighty-six million, four hundred thirty-one thousand, eight hundred seventy-two".