287235441 has 12 divisors (see below), whose sum is σ = 415837968. Its totient is φ = 191055384.

The previous prime is 287235439. The next prime is 287235449. The reversal of 287235441 is 144532782.

It is a happy number.

It is not a de Polignac number, because 287235441 - 2¹ = 287235439 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 287235396 and 287235405.

It is not an unprimeable number, because it can be changed into a prime (287235449) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32035 + ... + 40008.

It is an arithmetic number, because the mean of its divisors is an integer number (34653164).

Almost surely, 2^287235441 is an apocalyptic number.

It is an amenable number.

287235441 is a deficient number, since it is larger than the sum of its proper divisors (128602527).

287235441 is a wasteful number, since it uses less digits than its factorization.

287235441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72492 (or 72489 counting only the distinct ones).

The product of its digits is 53760, while the sum is 36.

The square root of 287235441 is about 16948.0217429646. The cubic root of 287235441 is about 659.8005526822.

The spelling of 287235441 in words is "two hundred eighty-seven million, two hundred thirty-five thousand, four hundred forty-one".