287961045 has 48 divisors (see below), whose sum is σ = 493479168. Its totient is φ = 143354880.

The previous prime is 287961043. The next prime is 287961061. The reversal of 287961045 is 540169782.

It is not a de Polignac number, because 287961045 - 2¹ = 287961043 is a prime.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 287960988 and 287961006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (287961043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 784452 + ... + 784818.

It is an arithmetic number, because the mean of its divisors is an integer number (10280816).

Almost surely, 2^287961045 is an apocalyptic number.

It is an amenable number.

287961045 is a deficient number, since it is larger than the sum of its proper divisors (205518123).

287961045 is a wasteful number, since it uses less digits than its factorization.

287961045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 590 (or 573 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 287961045 is about 16969.4149869699. The cubic root of 287961045 is about 660.3556737660.

The spelling of 287961045 in words is "two hundred eighty-seven million, nine hundred sixty-one thousand, forty-five".