287234056 has 16 divisors (see below), whose sum is σ = 538947900. Its totient is φ = 143514624.

The previous prime is 287234047. The next prime is 287234081. The reversal of 287234056 is 650432782.

It can be written as a sum of positive squares in 2 ways, for example, as 285948100 + 1285956 = 16910^2 + 1134^2 .

It is a super-2 number, since 2×287234056² = 165006805852422272, 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, 145 + ... + 23968.

Almost surely, 2^287234056 is an apocalyptic number.

It is an amenable number.

287234056 is a deficient number, since it is larger than the sum of its proper divisors (251713844).

287234056 is a wasteful number, since it uses less digits than its factorization.

287234056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25608 (or 25604 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 287234056 is about 16947.9808826892. The cubic root of 287234056 is about 659.7994921988.

The spelling of 287234056 in words is "two hundred eighty-seven million, two hundred thirty-four thousand, fifty-six".