5638740 has 24 divisors (see below), whose sum is σ = 15788640. Its totient is φ = 1503648.

The previous prime is 5638709. The next prime is 5638751. The reversal of 5638740 is 478365.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46930 + ... + 47049.

It is an arithmetic number, because the mean of its divisors is an integer number (657860).

Almost surely, 2^5638740 is an apocalyptic number.

It is an amenable number.

5638740 is an abundant number, since it is smaller than the sum of its proper divisors (10149900).

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

5638740 is a wasteful number, since it uses less digits than its factorization.

5638740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93991 (or 93989 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 5638740 is about 2374.6031247347. The cubic root of 5638740 is about 177.9893525593.

The spelling of 5638740 in words is "five million, six hundred thirty-eight thousand, seven hundred forty".