287864064 has 72 divisors (see below), whose sum is σ = 851285120. Its totient is φ = 95952384.

The previous prime is 287864051. The next prime is 287864069. The reversal of 287864064 is 460468782.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (287864069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13912 + ... + 27735.

Almost surely, 2^287864064 is an apocalyptic number.

287864064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

287864064 is an abundant number, since it is smaller than the sum of its proper divisors (563421056).

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

287864064 is an equidigital number, since it uses as much as digits as its factorization.

287864064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41672 (or 41652 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 45.

The square root of 287864064 is about 16966.5572229607. The cubic root of 287864064 is about 660.2815327835.

The spelling of 287864064 in words is "two hundred eighty-seven million, eight hundred sixty-four thousand, sixty-four".