640054248 has 16 divisors (see below), whose sum is σ = 1600135680. Its totient is φ = 213351408.

The previous prime is 640054237. The next prime is 640054297. The reversal of 640054248 is 842450046.

640054248 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13334440 + ... + 13334487.

It is an arithmetic number, because the mean of its divisors is an integer number (100008480).

Almost surely, 2^640054248 is an apocalyptic number.

It is an amenable number.

640054248 is an abundant number, since it is smaller than the sum of its proper divisors (960081432).

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

640054248 is a wasteful number, since it uses less digits than its factorization.

640054248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26668936 (or 26668932 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 33.

The square root of 640054248 is about 25299.2934288687. The cubic root of 640054248 is about 861.7982240276.

The spelling of 640054248 in words is "six hundred forty million, fifty-four thousand, two hundred forty-eight".