487121784 has 64 divisors (see below), whose sum is σ = 1274192640. Its totient is φ = 154894080.

The previous prime is 487121737. The next prime is 487121819.

487121784 is nontrivially palindromic in base 10.

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, 251299 + ... + 253229.

It is an arithmetic number, because the mean of its divisors is an integer number (19909260).

Almost surely, 2^487121784 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 487121784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (637096320).

487121784 is an abundant number, since it is smaller than the sum of its proper divisors (787070856).

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

487121784 is a wasteful number, since it uses less digits than its factorization.

487121784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2420 (or 2416 counting only the distinct ones).

The product of its digits is 100352, while the sum is 42.

The square root of 487121784 is about 22070.8355981372. The cubic root of 487121784 is about 786.8268723160.

The spelling of 487121784 in words is "four hundred eighty-seven million, one hundred twenty-one thousand, seven hundred eighty-four".