287671252 has 24 divisors (see below), whose sum is σ = 562588992. Its totient is φ = 127569600.

The previous prime is 287671249. The next prime is 287671283. The reversal of 287671252 is 252176782.

It is a happy number.

It is a congruent number.

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, 77928 + ... + 81535.

It is an arithmetic number, because the mean of its divisors is an integer number (23441208).

Almost surely, 2^287671252 is an apocalyptic number.

287671252 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

287671252 is a deficient number, since it is larger than the sum of its proper divisors (274917740).

287671252 is a wasteful number, since it uses less digits than its factorization.

287671252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159519 (or 159517 counting only the distinct ones).

The product of its digits is 94080, while the sum is 40.

The square root of 287671252 is about 16960.8741520005. The cubic root of 287671252 is about 660.1340805035.

The spelling of 287671252 in words is "two hundred eighty-seven million, six hundred seventy-one thousand, two hundred fifty-two".