868940080 has 20 divisors (see below), whose sum is σ = 2020285872. Its totient is φ = 347576000.

The previous prime is 868940071. The next prime is 868940081. The reversal of 868940080 is 80049868.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (868940081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5430796 + ... + 5430955.

Almost surely, 2^868940080 is an apocalyptic number.

868940080 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

868940080 is an abundant number, since it is smaller than the sum of its proper divisors (1151345792).

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

868940080 is a wasteful number, since it uses less digits than its factorization.

868940080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10861764 (or 10861758 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 43.

The square root of 868940080 is about 29477.7896050569. The cubic root of 868940080 is about 954.2524343448.

The spelling of 868940080 in words is "eight hundred sixty-eight million, nine hundred forty thousand, eighty".