491542324 has 120 divisors (see below), whose sum is σ = 1124343808. Its totient is φ = 186701760.

The previous prime is 491542319. The next prime is 491542333. The reversal of 491542324 is 423245194.

It is a super-2 number, since 2×491542324² = 483227712566641952, which contains 22 as substring.

Its product of digits (34560) is a multiple of the sum of its prime divisors (180).

It is a self number, because there is not a number n which added to its sum of digits gives 491542324.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3870349 + ... + 3870475.

Almost surely, 2^491542324 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 491542324, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (562171904).

491542324 is an abundant number, since it is smaller than the sum of its proper divisors (632801484).

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

491542324 is a wasteful number, since it uses less digits than its factorization.

491542324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203 (or 180 counting only the distinct ones).

The product of its digits is 34560, while the sum is 34.

The square root of 491542324 is about 22170.7537986420. The cubic root of 491542324 is about 789.1998114604.

The spelling of 491542324 in words is "four hundred ninety-one million, five hundred forty-two thousand, three hundred twenty-four".