287763252 has 24 divisors (see below), whose sum is σ = 767368896. Its totient is φ = 82218048.

The previous prime is 287763209. The next prime is 287763257. The reversal of 287763252 is 252367782.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (287763257) 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, 1712793 + ... + 1712960.

It is an arithmetic number, because the mean of its divisors is an integer number (31973704).

Almost surely, 2^287763252 is an apocalyptic number.

It is an amenable number.

287763252 is an abundant number, since it is smaller than the sum of its proper divisors (479605644).

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

287763252 is a wasteful number, since it uses less digits than its factorization.

287763252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3425767 (or 3425765 counting only the distinct ones).

The product of its digits is 282240, while the sum is 42.

The square root of 287763252 is about 16963.5860595571. The cubic root of 287763252 is about 660.2044453869.

The spelling of 287763252 in words is "two hundred eighty-seven million, seven hundred sixty-three thousand, two hundred fifty-two".