491027724 has 192 divisors, whose sum is σ = 1462272000. Its totient is φ = 141134400.

The previous prime is 491027723. The next prime is 491027729. The reversal of 491027724 is 427720194.

It is a super-2 number, since 2×491027724² = 482216451473240352, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (491027723) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2467377 + ... + 2467575.

It is an arithmetic number, because the mean of its divisors is an integer number (7616000).

Almost surely, 2^491027724 is an apocalyptic number.

491027724 is a gapful number since it is divisible by the number (44) 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 491027724, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (731136000).

491027724 is an abundant number, since it is smaller than the sum of its proper divisors (971244276).

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

491027724 is a wasteful number, since it uses less digits than its factorization.

491027724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321 (or 313 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 491027724 is about 22159.1453806323. The cubic root of 491027724 is about 788.9243085451.

The spelling of 491027724 in words is "four hundred ninety-one million, twenty-seven thousand, seven hundred twenty-four".