485131428 has 72 divisors (see below), whose sum is σ = 1248968448. Its totient is φ = 158744448.

The previous prime is 485131421. The next prime is 485131477. The reversal of 485131428 is 824131584.

485131428 is a `hidden beast` number, since 485 + 131 + 42 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 485131392 and 485131401.

It is not an unprimeable number, because it can be changed into a prime (485131421) 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 23 ways as a sum of consecutive naturals, for example, 964225 + ... + 964727.

It is an arithmetic number, because the mean of its divisors is an integer number (17346784).

Almost surely, 2^485131428 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 485131428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (624484224).

485131428 is an abundant number, since it is smaller than the sum of its proper divisors (763837020).

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

485131428 is a wasteful number, since it uses less digits than its factorization.

485131428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 953 (or 948 counting only the distinct ones).

The product of its digits is 30720, while the sum is 36.

The square root of 485131428 is about 22025.6992624525. The cubic root of 485131428 is about 785.7537639416.

The spelling of 485131428 in words is "four hundred eighty-five million, one hundred thirty-one thousand, four hundred twenty-eight".