401688005228 has 24 divisors (see below), whose sum is σ = 725702457984. Its totient is φ = 194345740800.

The previous prime is 401688005219. The next prime is 401688005273. The reversal of 401688005228 is 822500886104.

It is a super-2 number, since 2×401688005228² (a number of 24 digits) contains 22 as substring.

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, 1125098 + ... + 1438478.

It is an arithmetic number, because the mean of its divisors is an integer number (30237602416).

Almost surely, 2^401688005228 is an apocalyptic number.

It is an amenable number.

401688005228 is a deficient number, since it is larger than the sum of its proper divisors (324014452756).

401688005228 is a wasteful number, since it uses less digits than its factorization.

401688005228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323753 (or 323751 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 44.

The spelling of 401688005228 in words is "four hundred one billion, six hundred eighty-eight million, five thousand, two hundred twenty-eight".