868109052 has 12 divisors (see below), whose sum is σ = 2025587816. Its totient is φ = 289369680.

The previous prime is 868109051. The next prime is 868109087. The reversal of 868109052 is 250901868.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×868109052² = 1507226652328677408, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 868109052.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (868109051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36171199 + ... + 36171222.

Almost surely, 2^868109052 is an apocalyptic number.

It is an amenable number.

868109052 is an abundant number, since it is smaller than the sum of its proper divisors (1157478764).

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

868109052 is a wasteful number, since it uses less digits than its factorization.

868109052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72342428 (or 72342426 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 39.

The square root of 868109052 is about 29463.6904002197. The cubic root of 868109052 is about 953.9481312640.

The spelling of 868109052 in words is "eight hundred sixty-eight million, one hundred nine thousand, fifty-two".