400428296 has 16 divisors (see below), whose sum is σ = 751472640. Its totient is φ = 200035600.

The previous prime is 400428257. The next prime is 400428323. The reversal of 400428296 is 692824004.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12536 + ... + 30951.

It is an arithmetic number, because the mean of its divisors is an integer number (46967040).

Almost surely, 2^400428296 is an apocalyptic number.

It is an amenable number.

400428296 is a deficient number, since it is larger than the sum of its proper divisors (351044344).

400428296 is a wasteful number, since it uses less digits than its factorization.

400428296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44644 (or 44640 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 400428296 is about 20010.7045353231. The cubic root of 400428296 is about 737.0691819167.

The spelling of 400428296 in words is "four hundred million, four hundred twenty-eight thousand, two hundred ninety-six".