287145044 has 6 divisors (see below), whose sum is σ = 502503834. Its totient is φ = 143572520.

The previous prime is 287145031. The next prime is 287145077. The reversal of 287145044 is 440541782.

It can be written as a sum of positive squares in only one way, i.e., 232562500 + 54582544 = 15250^2 + 7388^2 .

It is a junction number, because it is equal to n+sod(n) for n = 287144995 and 287145013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35893127 + ... + 35893134.

It is an arithmetic number, because the mean of its divisors is an integer number (83750639).

Almost surely, 2^287145044 is an apocalyptic number.

It is an amenable number.

287145044 is a deficient number, since it is larger than the sum of its proper divisors (215358790).

287145044 is a wasteful number, since it uses less digits than its factorization.

287145044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71786265 (or 71786263 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 35.

The square root of 287145044 is about 16945.3546436774. The cubic root of 287145044 is about 659.7313292739.

The spelling of 287145044 in words is "two hundred eighty-seven million, one hundred forty-five thousand, forty-four".