287404116 has 12 divisors (see below), whose sum is σ = 670609632. Its totient is φ = 95801368.

The previous prime is 287404111. The next prime is 287404141. The reversal of 287404116 is 611404782.

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

It is a super-2 number, since 2×287404116² = 165202251787482912, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (287404111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11975160 + ... + 11975183.

It is an arithmetic number, because the mean of its divisors is an integer number (55884136).

Almost surely, 2^287404116 is an apocalyptic number.

It is an amenable number.

287404116 is an abundant number, since it is smaller than the sum of its proper divisors (383205516).

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

287404116 is a wasteful number, since it uses less digits than its factorization.

287404116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23950350 (or 23950348 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 287404116 is about 16952.9972571224. The cubic root of 287404116 is about 659.9296802950.

Adding to 287404116 its reverse (611404782), we get a palindrome (898808898).

The spelling of 287404116 in words is "two hundred eighty-seven million, four hundred four thousand, one hundred sixteen".