287142772 has 12 divisors (see below), whose sum is σ = 574285600. Its totient is φ = 123061176.

The previous prime is 287142769. The next prime is 287142773. The reversal of 287142772 is 277241782.

287142772 is an admirable number.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (287142773) 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, 5127522 + ... + 5127577.

Almost surely, 2^287142772 is an apocalyptic number.

It is an amenable number.

287142772 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

287142772 is a wasteful number, since it uses less digits than its factorization.

287142772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10255110 (or 10255108 counting only the distinct ones).

The product of its digits is 87808, while the sum is 40.

The square root of 287142772 is about 16945.2876045230. The cubic root of 287142772 is about 659.7295892549.

The spelling of 287142772 in words is "two hundred eighty-seven million, one hundred forty-two thousand, seven hundred seventy-two".