287680164 has 12 divisors (see below), whose sum is σ = 671253744. Its totient is φ = 95893384.

The previous prime is 287680157. The next prime is 287680177. The reversal of 287680164 is 461086782.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11986662 + ... + 11986685.

It is an arithmetic number, because the mean of its divisors is an integer number (55937812).

Almost surely, 2^287680164 is an apocalyptic number.

It is an amenable number.

287680164 is an abundant number, since it is smaller than the sum of its proper divisors (383573580).

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

287680164 is a wasteful number, since it uses less digits than its factorization.

287680164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23973354 (or 23973352 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 287680164 is about 16961.1368722736. The cubic root of 287680164 is about 660.1408973753.

The spelling of 287680164 in words is "two hundred eighty-seven million, six hundred eighty thousand, one hundred sixty-four".