402688428424 has 16 divisors (see below), whose sum is σ = 779396958720. Its totient is φ = 194849239440.

The previous prime is 402688428419. The next prime is 402688428427. The reversal of 402688428424 is 424824886204.

It is a super-2 number, since 2×402688428424² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (402688428427) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 811871584 + ... + 811872079.

It is an arithmetic number, because the mean of its divisors is an integer number (48712309920).

Almost surely, 2^402688428424 is an apocalyptic number.

It is an amenable number.

402688428424 is a deficient number, since it is larger than the sum of its proper divisors (376708530296).

402688428424 is a wasteful number, since it uses less digits than its factorization.

402688428424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1623743700 (or 1623743696 counting only the distinct ones).

The product of its (nonzero) digits is 6291456, while the sum is 52.

The spelling of 402688428424 in words is "four hundred two billion, six hundred eighty-eight million, four hundred twenty-eight thousand, four hundred twenty-four".