485512820 has 96 divisors (see below), whose sum is σ = 1140023808. Its totient is φ = 172541952.

The previous prime is 485512817. The next prime is 485512823. The reversal of 485512820 is 28215584.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (485512817) and next prime (485512823).

It is a super-3 number, since 3×485512820³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (485512823) 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, 818444 + ... + 819036.

It is an arithmetic number, because the mean of its divisors is an integer number (11875248).

Almost surely, 2^485512820 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 485512820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (570011904).

485512820 is an abundant number, since it is smaller than the sum of its proper divisors (654510988).

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

485512820 is a wasteful number, since it uses less digits than its factorization.

485512820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729 (or 727 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 35.

The square root of 485512820 is about 22034.3554478001. The cubic root of 485512820 is about 785.9596199799.

The spelling of 485512820 in words is "four hundred eighty-five million, five hundred twelve thousand, eight hundred twenty".