400804730 has 16 divisors (see below), whose sum is σ = 721681920. Its totient is φ = 160270032.

The previous prime is 400804721. The next prime is 400804741. The reversal of 400804730 is 37408004.

It is a self number, because there is not a number n which added to its sum of digits gives 400804730.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46931 + ... + 54809.

It is an arithmetic number, because the mean of its divisors is an integer number (45105120).

Almost surely, 2^400804730 is an apocalyptic number.

400804730 is a deficient number, since it is larger than the sum of its proper divisors (320877190).

400804730 is a wasteful number, since it uses less digits than its factorization.

400804730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12973.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 400804730 is about 20020.1081415661. The cubic root of 400804730 is about 737.3000771893.

The spelling of 400804730 in words is "four hundred million, eight hundred four thousand, seven hundred thirty".