11390538 has 32 divisors (see below), whose sum is σ = 24575040. Its totient is φ = 3507840.

The previous prime is 11390537. The next prime is 11390551. The reversal of 11390538 is 83509311.

It is a happy number.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (11390531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3456 + ... + 5892.

It is an arithmetic number, because the mean of its divisors is an integer number (767970).

Almost surely, 2^11390538 is an apocalyptic number.

11390538 is an abundant number, since it is smaller than the sum of its proper divisors (13184502).

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

11390538 is a wasteful number, since it uses less digits than its factorization.

11390538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2502.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 11390538 is about 3374.9871110865. The cubic root of 11390538 is about 224.9994271590. Note that the first 3 decimals are identical.

Adding to 11390538 its reverse (83509311), we get a palindrome (94899849).

The spelling of 11390538 in words is "eleven million, three hundred ninety thousand, five hundred thirty-eight".