868440510 has 192 divisors, whose sum is σ = 2717245440. Its totient is φ = 188248320.

The previous prime is 868440493. The next prime is 868440511. The reversal of 868440510 is 15044868.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (868440511) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1034671 + ... + 1035509.

It is an arithmetic number, because the mean of its divisors is an integer number (14152320).

Almost surely, 2^868440510 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 868440510, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1358622720).

868440510 is an abundant number, since it is smaller than the sum of its proper divisors (1848804930).

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

868440510 is a wasteful number, since it uses less digits than its factorization.

868440510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 943 (or 940 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 868440510 is about 29469.3147188733. The cubic root of 868440510 is about 954.0695267288.

It can be divided in two parts, 8684 and 40510, that added together give a palindrome (49194).

The spelling of 868440510 in words is "eight hundred sixty-eight million, four hundred forty thousand, five hundred ten".