808020140 has 24 divisors (see below), whose sum is σ = 1697552640. Its totient is φ = 323072768.

The previous prime is 808020133. The next prime is 808020151. The reversal of 808020140 is 41020808.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50564 + ... + 64596.

It is an arithmetic number, because the mean of its divisors is an integer number (70731360).

Almost surely, 2^808020140 is an apocalyptic number.

It is an amenable number.

808020140 is an abundant number, since it is smaller than the sum of its proper divisors (889532500).

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

808020140 is a wasteful number, since it uses less digits than its factorization.

808020140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16921 (or 16919 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 23.

The square root of 808020140 is about 28425.6950662600. The cubic root of 808020140 is about 931.4096401245.

Adding to 808020140 its reverse (41020808), we get a palindrome (849040948).

The spelling of 808020140 in words is "eight hundred eight million, twenty thousand, one hundred forty".