287891652 has 24 divisors (see below), whose sum is σ = 681210432. Its totient is φ = 94612000.

The previous prime is 287891647. The next prime is 287891677. The reversal of 287891652 is 256198782.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168099 + ... + 169802.

It is an arithmetic number, because the mean of its divisors is an integer number (28383768).

Almost surely, 2^287891652 is an apocalyptic number.

It is an amenable number.

287891652 is an abundant number, since it is smaller than the sum of its proper divisors (393318780).

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

287891652 is a wasteful number, since it uses less digits than its factorization.

287891652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337979 (or 337977 counting only the distinct ones).

The product of its digits is 483840, while the sum is 48.

The square root of 287891652 is about 16967.3702146208. The cubic root of 287891652 is about 660.3026252218.

The spelling of 287891652 in words is "two hundred eighty-seven million, eight hundred ninety-one thousand, six hundred fifty-two".