45005638 has 8 divisors (see below), whose sum is σ = 67591440. Its totient is φ = 22475160.

The previous prime is 45005621. The next prime is 45005669. The reversal of 45005638 is 83650054.

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

It is a congruent number.

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, 11733 + ... + 15088.

It is an arithmetic number, because the mean of its divisors is an integer number (8448930).

Almost surely, 2^45005638 is an apocalyptic number.

45005638 is a deficient number, since it is larger than the sum of its proper divisors (22585802).

45005638 is a wasteful number, since it uses less digits than its factorization.

45005638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27662.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 45005638 is about 6708.6241510462. The cubic root of 45005638 is about 355.7041844690.

The spelling of 45005638 in words is "forty-five million, five thousand, six hundred thirty-eight".