287483980 has 36 divisors (see below), whose sum is σ = 702284688. Its totient is φ = 98565600.

The previous prime is 287483947. The next prime is 287483983. The reversal of 287483980 is 89384782.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is not an unprimeable number, because it can be changed into a prime (287483983) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 145696 + ... + 147655.

It is an arithmetic number, because the mean of its divisors is an integer number (19507908).

Almost surely, 2^287483980 is an apocalyptic number.

287483980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

287483980 is an abundant number, since it is smaller than the sum of its proper divisors (414800708).

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

287483980 is a wasteful number, since it uses less digits than its factorization.

287483980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293374 (or 293365 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 49.

The square root of 287483980 is about 16955.3525472047. The cubic root of 287483980 is about 659.9908018308.

The spelling of 287483980 in words is "two hundred eighty-seven million, four hundred eighty-three thousand, nine hundred eighty".