287144956 has 24 divisors (see below), whose sum is σ = 574866656. Its totient is φ = 122938560.

The previous prime is 287144953. The next prime is 287144959. The reversal of 287144956 is 659441782.

It is an interprime number because it is at equal distance from previous prime (287144953) and next prime (287144959).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (287144951) 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, 26686 + ... + 35866.

Almost surely, 2^287144956 is an apocalyptic number.

It is an amenable number.

287144956 is an abundant number, since it is smaller than the sum of its proper divisors (287721700).

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

287144956 is a wasteful number, since it uses less digits than its factorization.

287144956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10309 (or 10307 counting only the distinct ones).

The product of its digits is 483840, while the sum is 46.

The square root of 287144956 is about 16945.3520470954. The cubic root of 287144956 is about 659.7312618790.

It can be divided in two parts, 28714 and 4956, that added together give a triangular number (33670 = T₂₅₉).

The spelling of 287144956 in words is "two hundred eighty-seven million, one hundred forty-four thousand, nine hundred fifty-six".