491030676 has 36 divisors (see below), whose sum is σ = 1244288500. Its totient is φ = 163271808.

The previous prime is 491030671. The next prime is 491030689. The reversal of 491030676 is 676030194.

It can be written as a sum of positive squares in 2 ways, for example, as 465264900 + 25765776 = 21570^2 + 5076^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×491030676² = 482222249546033952, which contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 491030676.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491030671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1951 + ... + 31398.

Almost surely, 2^491030676 is an apocalyptic number.

It is an amenable number.

491030676 is an abundant number, since it is smaller than the sum of its proper divisors (753257824).

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

491030676 is a wasteful number, since it uses less digits than its factorization.

491030676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33768 (or 33763 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 491030676 is about 22159.2119895993. The cubic root of 491030676 is about 788.9258895148.

The spelling of 491030676 in words is "four hundred ninety-one million, thirty thousand, six hundred seventy-six".