5638530 has 16 divisors (see below), whose sum is σ = 13532544. Its totient is φ = 1503600.

The previous prime is 5638517. The next prime is 5638531. The reversal of 5638530 is 358365.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 187951 = 5638530 / (5 + 6 + 3 + 8 + 5 + 3 + 0).

It is not an unprimeable number, because it can be changed into a prime (5638531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93946 + ... + 94005.

It is an arithmetic number, because the mean of its divisors is an integer number (845784).

Almost surely, 2^5638530 is an apocalyptic number.

5638530 is an abundant number, since it is smaller than the sum of its proper divisors (7894014).

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

5638530 is a wasteful number, since it uses less digits than its factorization.

5638530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187961.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 5638530 is about 2374.5589064077. The cubic root of 5638530 is about 177.9871429505.

The spelling of 5638530 in words is "five million, six hundred thirty-eight thousand, five hundred thirty".