400287882 has 32 divisors (see below), whose sum is σ = 860334912. Its totient is φ = 123704064.

The previous prime is 400287857. The next prime is 400287887. The reversal of 400287882 is 288782004.

It is a self number, because there is not a number n which added to its sum of digits gives 400287882.

It is not an unprimeable number, because it can be changed into a prime (400287887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22453 + ... + 36120.

It is an arithmetic number, because the mean of its divisors is an integer number (26885466).

Almost surely, 2^400287882 is an apocalyptic number.

400287882 is an abundant number, since it is smaller than the sum of its proper divisors (460047030).

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

400287882 is a wasteful number, since it uses less digits than its factorization.

400287882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58662.

The product of its (nonzero) digits is 57344, while the sum is 39.

The square root of 400287882 is about 20007.1957555276. The cubic root of 400287882 is about 736.9830183991.

The spelling of 400287882 in words is "four hundred million, two hundred eighty-seven thousand, eight hundred eighty-two".