491544288 has 168 divisors, whose sum is σ = 1528669800. Its totient is φ = 155084544.

The previous prime is 491544253. The next prime is 491544301. The reversal of 491544288 is 882445194.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 442678 + ... + 443786.

It is an arithmetic number, because the mean of its divisors is an integer number (9099225).

Almost surely, 2^491544288 is an apocalyptic number.

491544288 is a gapful number since it is divisible by the number (48) 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 491544288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (764334900).

491544288 is an abundant number, since it is smaller than the sum of its proper divisors (1037125512).

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

491544288 is a wasteful number, since it uses less digits than its factorization.

491544288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1156 (or 1133 counting only the distinct ones).

The product of its digits is 368640, while the sum is 45.

The square root of 491544288 is about 22170.7980911829. The cubic root of 491544288 is about 789.2008625645.

The spelling of 491544288 in words is "four hundred ninety-one million, five hundred forty-four thousand, two hundred eighty-eight".