400428200484 has 72 divisors (see below), whose sum is σ = 1124147596320. Its totient is φ = 123208671456.

The previous prime is 400428200479. The next prime is 400428200573. The reversal of 400428200484 is 484002824004.

400428200484 is a `hidden beast` number, since 400 + 4 + 2 + 8 + 200 + 48 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 23 ways as a sum of consecutive naturals, for example, 10951182 + ... + 10987685.

It is an arithmetic number, because the mean of its divisors is an integer number (15613161060).

Almost surely, 2^400428200484 is an apocalyptic number.

It is an amenable number.

400428200484 is an abundant number, since it is smaller than the sum of its proper divisors (723719395836).

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

400428200484 is a wasteful number, since it uses less digits than its factorization.

400428200484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21938906 (or 21938885 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 36.

The spelling of 400428200484 in words is "four hundred billion, four hundred twenty-eight million, two hundred thousand, four hundred eighty-four".