287422332 has 48 divisors (see below), whose sum is σ = 711299232. Its totient is φ = 90019840.

The previous prime is 287422321. The next prime is 287422337. The reversal of 287422332 is 233224782.

It is a super-2 number, since 2×287422332² = 165223193864636448, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 287422293 and 287422302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (287422337) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 240328 + ... + 241520.

It is an arithmetic number, because the mean of its divisors is an integer number (14818734).

Almost surely, 2^287422332 is an apocalyptic number.

It is an amenable number.

287422332 is an abundant number, since it is smaller than the sum of its proper divisors (423876900).

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

287422332 is a wasteful number, since it uses less digits than its factorization.

287422332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2398 (or 2396 counting only the distinct ones).

The product of its digits is 32256, while the sum is 33.

The square root of 287422332 is about 16953.5344987410. The cubic root of 287422332 is about 659.9436223652.

The spelling of 287422332 in words is "two hundred eighty-seven million, four hundred twenty-two thousand, three hundred thirty-two".