491242752 has 576 divisors, whose sum is σ = 1977937920. Its totient is φ = 116121600.

The previous prime is 491242711. The next prime is 491242781. The reversal of 491242752 is 257242194.

It is a tau number, because it is divible by the number of its divisors (576).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6918877 + ... + 6918947.

It is an arithmetic number, because the mean of its divisors is an integer number (3433920).

Almost surely, 2^491242752 is an apocalyptic number.

491242752 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 491242752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (988968960).

491242752 is an abundant number, since it is smaller than the sum of its proper divisors (1486695168).

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

491242752 is a wasteful number, since it uses less digits than its factorization.

491242752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127 (or 107 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 491242752 is about 22163.9967514887. The cubic root of 491242752 is about 789.0394521180.

The spelling of 491242752 in words is "four hundred ninety-one million, two hundred forty-two thousand, seven hundred fifty-two".