497888640 has 128 divisors (see below), whose sum is σ = 1763416800. Its totient is φ = 132765696.

The previous prime is 497888627. The next prime is 497888683. The reversal of 497888640 is 46888794.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2874 + ... + 31686.

Almost surely, 2^497888640 is an apocalyptic number.

497888640 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 497888640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (881708400).

497888640 is an abundant number, since it is smaller than the sum of its proper divisors (1265528160).

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

497888640 is a wasteful number, since it uses less digits than its factorization.

497888640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28841 (or 28823 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 54.

The square root of 497888640 is about 22313.4183844610. The cubic root of 497888640 is about 792.5817580603.

The spelling of 497888640 in words is "four hundred ninety-seven million, eight hundred eighty-eight thousand, six hundred forty".