485021820 has 96 divisors (see below), whose sum is σ = 1378944000. Its totient is φ = 127369984.

The previous prime is 485021813. The next prime is 485021821. The reversal of 485021820 is 28120584.

It is a super-2 number, since 2×485021820² = 470492331752224800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (485021821) 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, 2029261 + ... + 2029499.

It is an arithmetic number, because the mean of its divisors is an integer number (14364000).

Almost surely, 2^485021820 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 485021820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (689472000).

485021820 is an abundant number, since it is smaller than the sum of its proper divisors (893922180).

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

485021820 is a wasteful number, since it uses less digits than its factorization.

485021820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627 (or 625 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 485021820 is about 22023.2109375540. The cubic root of 485021820 is about 785.6945831502.

The spelling of 485021820 in words is "four hundred eighty-five million, twenty-one thousand, eight hundred twenty".