814885540 has 24 divisors (see below), whose sum is σ = 1955725632. Its totient is φ = 279389280.

The previous prime is 814885523. The next prime is 814885541. The reversal of 814885540 is 45588418.

It is not an unprimeable number, because it can be changed into a prime (814885541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2910166 + ... + 2910445.

It is an arithmetic number, because the mean of its divisors is an integer number (81488568).

Almost surely, 2^814885540 is an apocalyptic number.

It is an amenable number.

814885540 is an abundant number, since it is smaller than the sum of its proper divisors (1140840092).

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

814885540 is a wasteful number, since it uses less digits than its factorization.

814885540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5820627 (or 5820625 counting only the distinct ones).

The product of its (nonzero) digits is 204800, while the sum is 43.

The square root of 814885540 is about 28546.2000973860. The cubic root of 814885540 is about 934.0401332662.

The spelling of 814885540 in words is "eight hundred fourteen million, eight hundred eighty-five thousand, five hundred forty".