287223332 has 12 divisors (see below), whose sum is σ = 548335536. Its totient is φ = 130556040.

The previous prime is 287223301. The next prime is 287223353. The reversal of 287223332 is 233322782.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3263858 + ... + 3263945.

It is an arithmetic number, because the mean of its divisors is an integer number (45694628).

Almost surely, 2^287223332 is an apocalyptic number.

287223332 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

287223332 is a deficient number, since it is larger than the sum of its proper divisors (261112204).

287223332 is a wasteful number, since it uses less digits than its factorization.

287223332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6527818 (or 6527816 counting only the distinct ones).

The product of its digits is 24192, while the sum is 32.

The square root of 287223332 is about 16947.6644998655. The cubic root of 287223332 is about 659.7912808027.

The spelling of 287223332 in words is "two hundred eighty-seven million, two hundred twenty-three thousand, three hundred thirty-two".