491367436 has 48 divisors (see below), whose sum is σ = 1037612800. Its totient is φ = 198894528.

The previous prime is 491367427. The next prime is 491367449. The reversal of 491367436 is 634763194.

It is a super-2 number, since 2×491367436² = 482883914322428192, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 491367392 and 491367401.

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 15 ways as a sum of consecutive naturals, for example, 200410 + ... + 202846.

Almost surely, 2^491367436 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 491367436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (518806400).

491367436 is an abundant number, since it is smaller than the sum of its proper divisors (546245364).

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

491367436 is a wasteful number, since it uses less digits than its factorization.

491367436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2846 (or 2844 counting only the distinct ones).

The product of its digits is 326592, while the sum is 43.

The square root of 491367436 is about 22166.8093328742. The cubic root of 491367436 is about 789.1062027366.

The spelling of 491367436 in words is "four hundred ninety-one million, three hundred sixty-seven thousand, four hundred thirty-six".