491000832 has 352 divisors, whose sum is σ = 1729305600. Its totient is φ = 134701056.

The previous prime is 491000821. The next prime is 491000833. The reversal of 491000832 is 238000194.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 491000796 and 491000805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491000833) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8322019 + ... + 8322077.

It is an arithmetic number, because the mean of its divisors is an integer number (4912800).

Almost surely, 2^491000832 is an apocalyptic number.

491000832 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 491000832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (864652800).

491000832 is an abundant number, since it is smaller than the sum of its proper divisors (1238304768).

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

491000832 is a wasteful number, since it uses less digits than its factorization.

491000832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138 (or 114 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 491000832 is about 22158.5385799696. The cubic root of 491000832 is about 788.9099060048.

The spelling of 491000832 in words is "four hundred ninety-one million, eight hundred thirty-two", and thus it is an aban number.