459726640 has 20 divisors (see below), whose sum is σ = 1068864624. Its totient is φ = 183890624.

The previous prime is 459726637. The next prime is 459726721. The reversal of 459726640 is 46627954.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×459726640² = 422697167051379200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2873212 + ... + 2873371.

Almost surely, 2^459726640 is an apocalyptic number.

459726640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

459726640 is an abundant number, since it is smaller than the sum of its proper divisors (609137984).

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

459726640 is a wasteful number, since it uses less digits than its factorization.

459726640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5746596 (or 5746590 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 43.

The square root of 459726640 is about 21441.2369046191. The cubic root of 459726640 is about 771.7913205466.

The spelling of 459726640 in words is "four hundred fifty-nine million, seven hundred twenty-six thousand, six hundred forty".