864112140 has 36 divisors (see below), whose sum is σ = 2621140704. Its totient is φ = 230429856.

The previous prime is 864112129. The next prime is 864112157. The reversal of 864112140 is 41211468.

It is a happy number.

864112140 is a `hidden beast` number, since 8 + 641 + 1 + 2 + 14 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2400132 + ... + 2400491.

It is an arithmetic number, because the mean of its divisors is an integer number (72809464).

Almost surely, 2^864112140 is an apocalyptic number.

It is an amenable number.

864112140 is an abundant number, since it is smaller than the sum of its proper divisors (1757028564).

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

864112140 is a wasteful number, since it uses less digits than its factorization.

864112140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4800638 (or 4800633 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 864112140 is about 29395.7843916436. The cubic root of 864112140 is about 952.4818356839.

The spelling of 864112140 in words is "eight hundred sixty-four million, one hundred twelve thousand, one hundred forty".