45638 has 8 divisors (see below), whose sum is σ = 72120. Its totient is φ = 21600.

The previous prime is 45631. The next prime is 45641. The reversal of 45638 is 83654.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an alternating number because its digits alternate between even and odd.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45631) by changing a digit.

45638 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 563 + ... + 638.

It is an arithmetic number, because the mean of its divisors is an integer number (9015).

2⁴⁵⁶³⁸ is an apocalyptic number.

45638 is a deficient number, since it is larger than the sum of its proper divisors (26482).

45638 is a wasteful number, since it uses less digits than its factorization.

45638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1222.

The product of its digits is 2880, while the sum is 26.

The square root of 45638 is about 213.6305221639. The cubic root of 45638 is about 35.7362409765.

It can be divided in two parts, 456 and 38, that added together give a palindrome (494).

The spelling of 45638 in words is "forty-five thousand, six hundred thirty-eight".