485031820 has 96 divisors (see below), whose sum is σ = 1308238848. Its totient is φ = 146817792.

The previous prime is 485031817. The next prime is 485031851. The reversal of 485031820 is 28130584.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36067 + ... + 47653.

It is an arithmetic number, because the mean of its divisors is an integer number (13627488).

Almost surely, 2^485031820 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 485031820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (654119424).

485031820 is an abundant number, since it is smaller than the sum of its proper divisors (823207028).

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

485031820 is a wasteful number, since it uses less digits than its factorization.

485031820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11639 (or 11637 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 485031820 is about 22023.4379695814. The cubic root of 485031820 is about 785.6999828329.

The spelling of 485031820 in words is "four hundred eighty-five million, thirty-one thousand, eight hundred twenty".