487205820 has 96 divisors (see below), whose sum is σ = 1530930240. Its totient is φ = 128620800.

The previous prime is 487205819. The next prime is 487205821. The reversal of 487205820 is 28502784.

It is a happy number.

487205820 is a `hidden beast` number, since 4 + 8 + 72 + 0 + 582 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (487205819) and next prime (487205821).

It is a super-2 number, since 2×487205820² = 474739022083744800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (487205821) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50074 + ... + 59006.

It is an arithmetic number, because the mean of its divisors is an integer number (15947190).

Almost surely, 2^487205820 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 487205820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (765465120).

487205820 is an abundant number, since it is smaller than the sum of its proper divisors (1043724420).

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

487205820 is a wasteful number, since it uses less digits than its factorization.

487205820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9052 (or 9044 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 36.

The square root of 487205820 is about 22072.7392953389. The cubic root of 487205820 is about 786.8721162935.

The spelling of 487205820 in words is "four hundred eighty-seven million, two hundred five thousand, eight hundred twenty".