38636538 has 32 divisors (see below), whose sum is σ = 83082240. Its totient is φ = 11939760.

The previous prime is 38636537. The next prime is 38636539. The reversal of 38636538 is 83563683.

It is an interprime number because it is at equal distance from previous prime (38636537) and next prime (38636539).

It is a self number, because there is not a number n which added to its sum of digits gives 38636538.

It is not an unprimeable number, because it can be changed into a prime (38636531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1753 + ... + 8963.

It is an arithmetic number, because the mean of its divisors is an integer number (2596320).

Almost surely, 2^38636538 is an apocalyptic number.

38636538 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

38636538 is an abundant number, since it is smaller than the sum of its proper divisors (44445702).

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

38636538 is a wasteful number, since it uses less digits than its factorization.

38636538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7282.

The product of its digits is 311040, while the sum is 42.

The square root of 38636538 is about 6215.8296308699. The cubic root of 38636538 is about 338.0643704065.

It can be divided in two parts, 3863 and 6538, that added together give a palindrome (10401).

The spelling of 38636538 in words is "thirty-eight million, six hundred thirty-six thousand, five hundred thirty-eight".