485564840 has 32 divisors (see below), whose sum is σ = 1098199080. Its totient is φ = 193216512.

The previous prime is 485564839. The next prime is 485564843. The reversal of 485564840 is 48465584.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 368102596 + 117462244 = 19186^2 + 10838^2 .

It is a junction number, because it is equal to n+sod(n) for n = 485564791 and 485564800.

It is not an unprimeable number, because it can be changed into a prime (485564843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23729 + ... + 39168.

Almost surely, 2^485564840 is an apocalyptic number.

485564840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

485564840 is an abundant number, since it is smaller than the sum of its proper divisors (612634240).

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

485564840 is a wasteful number, since it uses less digits than its factorization.

485564840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63101 (or 63097 counting only the distinct ones).

The product of its (nonzero) digits is 614400, while the sum is 44.

The square root of 485564840 is about 22035.5358455382. The cubic root of 485564840 is about 785.9876893789.

The spelling of 485564840 in words is "four hundred eighty-five million, five hundred sixty-four thousand, eight hundred forty".