287020222 has 8 divisors (see below), whose sum is σ = 431046000. Its totient is φ = 143338224.

The previous prime is 287020219. The next prime is 287020229. The reversal of 287020222 is 222020782.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (287020229) 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, 83847 + ... + 87202.

It is an arithmetic number, because the mean of its divisors is an integer number (53880750).

Almost surely, 2^287020222 is an apocalyptic number.

287020222 is a deficient number, since it is larger than the sum of its proper divisors (144025778).

287020222 is a wasteful number, since it uses less digits than its factorization.

287020222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171890.

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 287020222 is about 16941.6711690435. The cubic root of 287020222 is about 659.6357203114.

The spelling of 287020222 in words is "two hundred eighty-seven million, twenty thousand, two hundred twenty-two".