465985820 has 12 divisors (see below), whose sum is σ = 978570264. Its totient is φ = 186394320.

The previous prime is 465985801. The next prime is 465985837. The reversal of 465985820 is 28589564.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11649626 + ... + 11649665.

It is an arithmetic number, because the mean of its divisors is an integer number (81547522).

Almost surely, 2^465985820 is an apocalyptic number.

It is an amenable number.

465985820 is an abundant number, since it is smaller than the sum of its proper divisors (512584444).

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

465985820 is a wasteful number, since it uses less digits than its factorization.

465985820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23299300 (or 23299298 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 47.

The square root of 465985820 is about 21586.7047045166. The cubic root of 465985820 is about 775.2781907993.

The spelling of 465985820 in words is "four hundred sixty-five million, nine hundred eighty-five thousand, eight hundred twenty".