52736638 has 8 divisors (see below), whose sum is σ = 80285832. Its totient is φ = 25974696.

The previous prime is 52736633. The next prime is 52736653. The reversal of 52736638 is 83663725.

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

It is a self number, because there is not a number n which added to its sum of digits gives 52736638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52736633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 196645 + ... + 196912.

It is an arithmetic number, because the mean of its divisors is an integer number (10035729).

Almost surely, 2^52736638 is an apocalyptic number.

52736638 is a deficient number, since it is larger than the sum of its proper divisors (27549194).

52736638 is a wasteful number, since it uses less digits than its factorization.

52736638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393626.

The product of its digits is 181440, while the sum is 40.

The square root of 52736638 is about 7261.9995868907. Note that the first 3 decimals coincide. The cubic root of 52736638 is about 375.0053640714.

It can be divided in two parts, 5273 and 6638, that added together give a palindrome (11911).

The spelling of 52736638 in words is "fifty-two million, seven hundred thirty-six thousand, six hundred thirty-eight".