491826740 has 24 divisors (see below), whose sum is σ = 1033254600. Its totient is φ = 196651008.

The previous prime is 491826739. The next prime is 491826767. The reversal of 491826740 is 47628194.

It can be written as a sum of positive squares in 4 ways, for example, as 40094224 + 451732516 = 6332^2 + 21254^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87536 + ... + 92984.

It is an arithmetic number, because the mean of its divisors is an integer number (43052275).

Almost surely, 2^491826740 is an apocalyptic number.

It is an amenable number.

491826740 is an abundant number, since it is smaller than the sum of its proper divisors (541427860).

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

491826740 is a wasteful number, since it uses less digits than its factorization.

491826740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9971 (or 9969 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 491826740 is about 22177.1670868937. The cubic root of 491826740 is about 789.3519975924.

The spelling of 491826740 in words is "four hundred ninety-one million, eight hundred twenty-six thousand, seven hundred forty".