487789820 has 24 divisors (see below), whose sum is σ = 1170695904. Its totient is φ = 167242176.

The previous prime is 487789787. The next prime is 487789849. The reversal of 487789820 is 28987784.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1741967 + ... + 1742246.

It is an arithmetic number, because the mean of its divisors is an integer number (48778996).

Almost surely, 2^487789820 is an apocalyptic number.

It is an amenable number.

487789820 is an abundant number, since it is smaller than the sum of its proper divisors (682906084).

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

487789820 is a wasteful number, since it uses less digits than its factorization.

487789820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3484229 (or 3484227 counting only the distinct ones).

The product of its (nonzero) digits is 1806336, while the sum is 53.

The square root of 487789820 is about 22085.9643212607. The cubic root of 487789820 is about 787.1863912941.

The spelling of 487789820 in words is "four hundred eighty-seven million, seven hundred eighty-nine thousand, eight hundred twenty".