287920713 has 8 divisors (see below), whose sum is σ = 383976576. Its totient is φ = 191906000.

The previous prime is 287920709. The next prime is 287920727. The reversal of 287920713 is 317029782.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 287920713 - 2² = 287920709 is a prime.

It is not an unprimeable number, because it can be changed into a prime (287920753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14743 + ... + 28163.

It is an arithmetic number, because the mean of its divisors is an integer number (47997072).

Almost surely, 2^287920713 is an apocalyptic number.

It is an amenable number.

287920713 is a deficient number, since it is larger than the sum of its proper divisors (96055863).

287920713 is a wasteful number, since it uses less digits than its factorization.

287920713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20575.

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 287920713 is about 16968.2265720375. The cubic root of 287920713 is about 660.3248423868.

The spelling of 287920713 in words is "two hundred eighty-seven million, nine hundred twenty thousand, seven hundred thirteen".