403512040256 has 56 divisors (see below), whose sum is σ = 913037315400. Its totient is φ = 175281242112.

The previous prime is 403512040249. The next prime is 403512040289. The reversal of 403512040256 is 652040215304.

It can be written as a sum of positive squares in 4 ways, for example, as 12673600 + 403499366656 = 3560^2 + 635216^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

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, 14250281 + ... + 14278568.

It is an arithmetic number, because the mean of its divisors is an integer number (16304237775).

Almost surely, 2^403512040256 is an apocalyptic number.

It is an amenable number.

403512040256 is an abundant number, since it is smaller than the sum of its proper divisors (509525275144).

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

403512040256 is a wasteful number, since it uses less digits than its factorization.

403512040256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28528891 (or 28528881 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

The spelling of 403512040256 in words is "four hundred three billion, five hundred twelve million, forty thousand, two hundred fifty-six".