491276450 has 72 divisors (see below), whose sum is σ = 1068681600. Its totient is φ = 167532960.

The previous prime is 491276449. The next prime is 491276453. The reversal of 491276450 is 54672194.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491276453) 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 35 ways as a sum of consecutive naturals, for example, 585131 + ... + 585969.

It is an arithmetic number, because the mean of its divisors is an integer number (14842800).

Almost surely, 2^491276450 is an apocalyptic number.

491276450 is an abundant number, since it is smaller than the sum of its proper divisors (577405150).

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

491276450 is a wasteful number, since it uses less digits than its factorization.

491276450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1104 (or 1092 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 491276450 is about 22164.7569352790. The cubic root of 491276450 is about 789.0574937368.

The spelling of 491276450 in words is "four hundred ninety-one million, two hundred seventy-six thousand, four hundred fifty".