287678712 has 32 divisors (see below), whose sum is σ = 719740800. Its totient is φ = 95820384.

The previous prime is 287678711. The next prime is 287678761. The reversal of 287678712 is 217876782.

It is a happy number.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (287678711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34839 + ... + 42297.

It is an arithmetic number, because the mean of its divisors is an integer number (22491900).

Almost surely, 2^287678712 is an apocalyptic number.

It is an amenable number.

287678712 is an abundant number, since it is smaller than the sum of its proper divisors (432062088).

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

287678712 is a wasteful number, since it uses less digits than its factorization.

287678712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9075 (or 9071 counting only the distinct ones).

The product of its digits is 526848, while the sum is 48.

The square root of 287678712 is about 16961.0940684851. The cubic root of 287678712 is about 660.1397867366.

The spelling of 287678712 in words is "two hundred eighty-seven million, six hundred seventy-eight thousand, seven hundred twelve".