285678336028 has 12 divisors (see below), whose sum is σ = 500825079720. Its totient is φ = 142585456112.

The previous prime is 285678336023. The next prime is 285678336049. The reversal of 285678336028 is 820633876582.

It is a super-2 number, since 2×285678336028² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285678336023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63425443 + ... + 63429946.

It is an arithmetic number, because the mean of its divisors is an integer number (41735423310).

Almost surely, 2^285678336028 is an apocalyptic number.

It is an amenable number.

285678336028 is a deficient number, since it is larger than the sum of its proper divisors (215146743692).

285678336028 is a wasteful number, since it uses less digits than its factorization.

285678336028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126855956 (or 126855954 counting only the distinct ones).

The product of its (nonzero) digits is 23224320, while the sum is 58.

The spelling of 285678336028 in words is "two hundred eighty-five billion, six hundred seventy-eight million, three hundred thirty-six thousand, twenty-eight".