491748012 has 72 divisors (see below), whose sum is σ = 1469613600. Its totient is φ = 135652608.

The previous prime is 491748011. The next prime is 491748013. The reversal of 491748012 is 210847194.

It is an interprime number because it is at equal distance from previous prime (491748011) and next prime (491748013).

It is a super-2 number, since 2×491748012² = 483632214611904288, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (491748011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26337 + ... + 40952.

It is an arithmetic number, because the mean of its divisors is an integer number (20411300).

Almost surely, 2^491748012 is an apocalyptic number.

491748012 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

491748012 is an abundant number, since it is smaller than the sum of its proper divisors (977865588).

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

491748012 is a wasteful number, since it uses less digits than its factorization.

491748012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67335 (or 67330 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 491748012 is about 22175.3920371208. The cubic root of 491748012 is about 789.3098774613.

The spelling of 491748012 in words is "four hundred ninety-one million, seven hundred forty-eight thousand, twelve".