287303704640 has 112 divisors (see below), whose sum is σ = 747753306624. Its totient is φ = 104672256000.

The previous prime is 287303704627. The next prime is 287303704661. The reversal of 287303704640 is 46407303782.

It is a junction number, because it is equal to n+sod(n) for n = 287303704591 and 287303704600.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 683186 + ... + 1020465.

Almost surely, 2^287303704640 is an apocalyptic number.

287303704640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

287303704640 is an abundant number, since it is smaller than the sum of its proper divisors (460449601984).

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

287303704640 is a wasteful number, since it uses less digits than its factorization.

287303704640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1703716 (or 1703706 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 44.

The spelling of 287303704640 in words is "two hundred eighty-seven billion, three hundred three million, seven hundred four thousand, six hundred forty".