491046720 has 56 divisors (see below), whose sum is σ = 1559076384. Its totient is φ = 130945536.

The previous prime is 491046719. The next prime is 491046737. The reversal of 491046720 is 27640194.

It is a happy number.

It is a super-2 number, since 2×491046720² = 482253762445516800, which contains 22 as substring.

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, 254794 + ... + 256713.

Almost surely, 2^491046720 is an apocalyptic number.

491046720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

491046720 is an abundant number, since it is smaller than the sum of its proper divisors (1068029664).

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

491046720 is a wasteful number, since it uses less digits than its factorization.

491046720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511527 (or 511517 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 491046720 is about 22159.5740031256. The cubic root of 491046720 is about 788.9344819102.

The spelling of 491046720 in words is "four hundred ninety-one million, forty-six thousand, seven hundred twenty".