491627880 has 192 divisors, whose sum is σ = 1702995840. Its totient is φ = 127464192.

The previous prime is 491627827. The next prime is 491627887. The reversal of 491627880 is 88726194.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (491627887) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 358957 + ... + 360323.

It is an arithmetic number, because the mean of its divisors is an integer number (8869770).

Almost surely, 2^491627880 is an apocalyptic number.

491627880 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 491627880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (851497920).

491627880 is an abundant number, since it is smaller than the sum of its proper divisors (1211367960).

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

491627880 is a wasteful number, since it uses less digits than its factorization.

491627880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1430 (or 1414 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 491627880 is about 22172.6831935154. The cubic root of 491627880 is about 789.2455971834.

The spelling of 491627880 in words is "four hundred ninety-one million, six hundred twenty-seven thousand, eight hundred eighty".