287970399904 has 24 divisors (see below), whose sum is σ = 618481882368. Its totient is φ = 130895636160.

The previous prime is 287970399901. The next prime is 287970399907. The reversal of 287970399904 is 409993079782.

It is an interprime number because it is at equal distance from previous prime (287970399901) and next prime (287970399907).

It is a self number, because there is not a number n which added to its sum of digits gives 287970399904.

It is not an unprimeable number, because it can be changed into a prime (287970399901) 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 3 ways as a sum of consecutive naturals, for example, 409048512 + ... + 409049215.

It is an arithmetic number, because the mean of its divisors is an integer number (25770078432).

Almost surely, 2^287970399904 is an apocalyptic number.

It is an amenable number.

287970399904 is an abundant number, since it is smaller than the sum of its proper divisors (330511482464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

287970399904 is a wasteful number, since it uses less digits than its factorization.

287970399904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 818097748 (or 818097740 counting only the distinct ones).

The product of its (nonzero) digits is 61725888, while the sum is 67.

The spelling of 287970399904 in words is "two hundred eighty-seven billion, nine hundred seventy million, three hundred ninety-nine thousand, nine hundred four".