868204040 has 48 divisors (see below), whose sum is σ = 2147202540. Its totient is φ = 315708800.

The previous prime is 868204039. The next prime is 868204079. The reversal of 868204040 is 40402868.

It can be written as a sum of positive squares in 2 ways, for example, as 865183396 + 3020644 = 29414^2 + 1738^2 .

It is a junction number, because it is equal to n+sod(n) for n = 868203988 and 868204006.

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, 84851 + ... + 94530.

Almost surely, 2^868204040 is an apocalyptic number.

It is an amenable number.

868204040 is an abundant number, since it is smaller than the sum of its proper divisors (1278998500).

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

868204040 is a wasteful number, since it uses less digits than its factorization.

868204040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179414 (or 179399 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 868204040 is about 29465.3023062720. The cubic root of 868204040 is about 953.9829234828.

The spelling of 868204040 in words is "eight hundred sixty-eight million, two hundred four thousand, forty".