400946501228 has 24 divisors (see below), whose sum is σ = 863577080352. Its totient is φ = 158616198144.

The previous prime is 400946501203. The next prime is 400946501231. The reversal of 400946501228 is 822105649004.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

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, 550750325 + ... + 550751052.

It is an arithmetic number, because the mean of its divisors is an integer number (35982378348).

Almost surely, 2^400946501228 is an apocalyptic number.

It is an amenable number.

400946501228 is an abundant number, since it is smaller than the sum of its proper divisors (462630579124).

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

400946501228 is a wasteful number, since it uses less digits than its factorization.

400946501228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1101501401 (or 1101501399 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 41.

The spelling of 400946501228 in words is "four hundred billion, nine hundred forty-six million, five hundred one thousand, two hundred twenty-eight".