287034140 has 48 divisors (see below), whose sum is σ = 635980800. Its totient is φ = 108516672.

The previous prime is 287034127. The next prime is 287034221. The reversal of 287034140 is 41430782.

It is a congruent number.

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, 275741 + ... + 276779.

It is an arithmetic number, because the mean of its divisors is an integer number (13249600).

Almost surely, 2^287034140 is an apocalyptic number.

287034140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 287034140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (317990400).

287034140 is an abundant number, since it is smaller than the sum of its proper divisors (348946660).

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

287034140 is a wasteful number, since it uses less digits than its factorization.

287034140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1794 (or 1792 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 287034140 is about 16942.0819263749. The cubic root of 287034140 is about 659.6463823494.

The spelling of 287034140 in words is "two hundred eighty-seven million, thirty-four thousand, one hundred forty".