287448540 has 48 divisors (see below), whose sum is σ = 824493600. Its totient is φ = 74782720.

The previous prime is 287448533. The next prime is 287448547. The reversal of 287448540 is 45844782.

It is an interprime number because it is at equal distance from previous prime (287448533) and next prime (287448547).

It is a junction number, because it is equal to n+sod(n) for n = 287448492 and 287448501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (287448547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55965 + ... + 60884.

It is an arithmetic number, because the mean of its divisors is an integer number (17176950).

Almost surely, 2^287448540 is an apocalyptic number.

287448540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

287448540 is an abundant number, since it is smaller than the sum of its proper divisors (537045060).

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

287448540 is a wasteful number, since it uses less digits than its factorization.

287448540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116902 (or 116900 counting only the distinct ones).

The product of its (nonzero) digits is 286720, while the sum is 42.

The square root of 287448540 is about 16954.3074172907. The cubic root of 287448540 is about 659.9636802787.

The spelling of 287448540 in words is "two hundred eighty-seven million, four hundred forty-eight thousand, five hundred forty".