287807396 has 6 divisors (see below), whose sum is σ = 503662950. Its totient is φ = 143903696.

The previous prime is 287807389. The next prime is 287807417. The reversal of 287807396 is 693708782.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 169780900 + 118026496 = 13030^2 + 10864^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35975921 + ... + 35975928.

It is an arithmetic number, because the mean of its divisors is an integer number (83943825).

Almost surely, 2^287807396 is an apocalyptic number.

It is an amenable number.

287807396 is a deficient number, since it is larger than the sum of its proper divisors (215855554).

287807396 is a wasteful number, since it uses less digits than its factorization.

287807396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71951853 (or 71951851 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 50.

The square root of 287807396 is about 16964.8871496394. The cubic root of 287807396 is about 660.2382029691.

The spelling of 287807396 in words is "two hundred eighty-seven million, eight hundred seven thousand, three hundred ninety-six".