497264640 has 96 divisors (see below), whose sum is σ = 1590956640. Its totient is φ = 132595712.

The previous prime is 497264629. The next prime is 497264641. The reversal of 497264640 is 46462794.

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 497264592 and 497264601.

It is not an unprimeable number, because it can be changed into a prime (497264641) 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 7 ways as a sum of consecutive naturals, for example, 22627 + ... + 38813.

It is an arithmetic number, because the mean of its divisors is an integer number (16572465).

Almost surely, 2^497264640 is an apocalyptic number.

497264640 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 497264640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (795478320).

497264640 is an abundant number, since it is smaller than the sum of its proper divisors (1093692000).

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

497264640 is a wasteful number, since it uses less digits than its factorization.

497264640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16217 (or 16197 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 42.

The square root of 497264640 is about 22299.4313828851. The cubic root of 497264640 is about 792.2505074317.

The spelling of 497264640 in words is "four hundred ninety-seven million, two hundred sixty-four thousand, six hundred forty".