485391920 has 40 divisors (see below), whose sum is σ = 1215349296. Its totient is φ = 179221248.

The previous prime is 485391913. The next prime is 485391923. The reversal of 485391920 is 29193584.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (485391923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232322 + ... + 234401.

Almost surely, 2^485391920 is an apocalyptic number.

485391920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

485391920 is an abundant number, since it is smaller than the sum of its proper divisors (729957376).

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

485391920 is a wasteful number, since it uses less digits than its factorization.

485391920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466749 (or 466743 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 485391920 is about 22031.6118339081. The cubic root of 485391920 is about 785.8943759722.

The spelling of 485391920 in words is "four hundred eighty-five million, three hundred ninety-one thousand, nine hundred twenty".