400028960 has 48 divisors (see below), whose sum is σ = 975566592. Its totient is φ = 154848000.

The previous prime is 400028939. The next prime is 400028999. The reversal of 400028960 is 69820004.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 35366 + ... + 45285.

It is an arithmetic number, because the mean of its divisors is an integer number (20324304).

Almost surely, 2^400028960 is an apocalyptic number.

400028960 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

400028960 is an abundant number, since it is smaller than the sum of its proper divisors (575537632).

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

400028960 is a wasteful number, since it uses less digits than its factorization.

400028960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80697 (or 80689 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 400028960 is about 20000.7239868961. The cubic root of 400028960 is about 736.8240808910.

Adding to 400028960 its reverse (69820004), we get a palindrome (469848964).

The spelling of 400028960 in words is "four hundred million, twenty-eight thousand, nine hundred sixty".