491420224 has 63 divisors (see below), whose sum is σ = 1042292937. Its totient is φ = 229837824.

The previous prime is 491420213. The next prime is 491420257. The reversal of 491420224 is 422024194.

The square root of 491420224 is 22168.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 382593600 + 108826624 = 19560^2 + 10432^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 491420192 and 491420201.

It is an unprimeable number.

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 8 ways as a sum of consecutive naturals, for example, 3014767 + ... + 3014929.

Almost surely, 2^491420224 is an apocalyptic number.

491420224 is the 22168-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 491420224

491420224 is an abundant number, since it is smaller than the sum of its proper divisors (550872713).

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

491420224 is an equidigital number, since it uses as much as digits as its factorization.

491420224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372 (or 182 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The cubic root of 491420224 is about 789.1344598300.

The spelling of 491420224 in words is "four hundred ninety-one million, four hundred twenty thousand, two hundred twenty-four".