287426668 has 12 divisors (see below), whose sum is σ = 519222592. Its totient is φ = 139077360.

The previous prime is 287426647. The next prime is 287426683. The reversal of 287426668 is 866624782.

It is a super-2 number, since 2×287426668² = 165228178955164448, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1158855 + ... + 1159102.

Almost surely, 2^287426668 is an apocalyptic number.

It is an amenable number.

287426668 is a deficient number, since it is larger than the sum of its proper divisors (231795924).

287426668 is a wasteful number, since it uses less digits than its factorization.

287426668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2317992 (or 2317990 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 49.

The square root of 287426668 is about 16953.6623771974. The cubic root of 287426668 is about 659.9469409442.

The spelling of 287426668 in words is "two hundred eighty-seven million, four hundred twenty-six thousand, six hundred sixty-eight".