491241072 has 120 divisors (see below), whose sum is σ = 1483036032. Its totient is φ = 139708800.

The previous prime is 491241071. The next prime is 491241083. The reversal of 491241072 is 270142194.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491241071) 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 23 ways as a sum of consecutive naturals, for example, 778197 + ... + 778827.

Almost surely, 2^491241072 is an apocalyptic number.

491241072 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 491241072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (741518016).

491241072 is an abundant number, since it is smaller than the sum of its proper divisors (991794960).

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

491241072 is a wasteful number, since it uses less digits than its factorization.

491241072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 987 (or 974 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 491241072 is about 22163.9588521545. The cubic root of 491241072 is about 789.0385526388.

The spelling of 491241072 in words is "four hundred ninety-one million, two hundred forty-one thousand, seventy-two".