491632 has 10 divisors (see below), whose sum is σ = 952568. Its totient is φ = 245808.

The previous prime is 491627. The next prime is 491633. The reversal of 491632 is 236194.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 491597 and 491606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491633) by changing a digit.

491632 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15348 + ... + 15379.

2⁴⁹¹⁶³² is an apocalyptic number.

It is an amenable number.

491632 is a deficient number, since it is larger than the sum of its proper divisors (460936).

491632 is a wasteful number, since it uses less digits than its factorization.

491632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30735 (or 30729 counting only the distinct ones).

The product of its digits is 1296, while the sum is 25.

The square root of 491632 is about 701.1647452632. The cubic root of 491632 is about 78.9247801888.

It can be divided in two parts, 49 and 1632, that added together give a square (1681 = 41²).

The spelling of 491632 in words is "four hundred ninety-one thousand, six hundred thirty-two".