287108306228 has 24 divisors (see below), whose sum is σ = 524963109888. Its totient is φ = 137134998176.

The previous prime is 287108306213. The next prime is 287108306263. The reversal of 287108306228 is 822603801782.

It is a super-2 number, since 2×287108306228² (a number of 24 digits) contains 22 as substring.

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, 1947476 + ... + 2089707.

It is an arithmetic number, because the mean of its divisors is an integer number (21873462912).

Almost surely, 2^287108306228 is an apocalyptic number.

It is an amenable number.

287108306228 is a deficient number, since it is larger than the sum of its proper divisors (237854803660).

287108306228 is a wasteful number, since it uses less digits than its factorization.

287108306228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4037983 (or 4037981 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 47.

The spelling of 287108306228 in words is "two hundred eighty-seven billion, one hundred eight million, three hundred six thousand, two hundred twenty-eight".