491480628 has 12 divisors (see below), whose sum is σ = 1146788160. Its totient is φ = 163826872.

The previous prime is 491480623. The next prime is 491480677. The reversal of 491480628 is 826084194.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 491480628.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491480623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20478348 + ... + 20478371.

It is an arithmetic number, because the mean of its divisors is an integer number (95565680).

Almost surely, 2^491480628 is an apocalyptic number.

It is an amenable number.

491480628 is an abundant number, since it is smaller than the sum of its proper divisors (655307532).

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

491480628 is a wasteful number, since it uses less digits than its factorization.

491480628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40956726 (or 40956724 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 42.

The square root of 491480628 is about 22169.3623724274. The cubic root of 491480628 is about 789.1667912392.

The spelling of 491480628 in words is "four hundred ninety-one million, four hundred eighty thousand, six hundred twenty-eight".