400303296 has 140 divisors (see below), whose sum is σ = 1219279248. Its totient is φ = 129765888.

The previous prime is 400303283. The next prime is 400303303. The reversal of 400303296 is 692303004.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 190765 + ... + 192851.

Almost surely, 2^400303296 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 400303296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (609639624).

400303296 is an abundant number, since it is smaller than the sum of its proper divisors (818975952).

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

400303296 is a wasteful number, since it uses less digits than its factorization.

400303296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2148 (or 2129 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 400303296 is about 20007.5809632249. The cubic root of 400303296 is about 736.9924780163.

The spelling of 400303296 in words is "four hundred million, three hundred three thousand, two hundred ninety-six".