16117438 has 16 divisors (see below), whose sum is σ = 24667776. Its totient is φ = 7896600.

The previous prime is 16117433. The next prime is 16117441. The reversal of 16117438 is 83471161.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16117433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24745 + ... + 25387.

It is an arithmetic number, because the mean of its divisors is an integer number (1541736).

Almost surely, 2^16117438 is an apocalyptic number.

16117438 is a deficient number, since it is larger than the sum of its proper divisors (8550338).

16117438 is a wasteful number, since it uses less digits than its factorization.

16117438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 879.

The product of its digits is 4032, while the sum is 31.

The square root of 16117438 is about 4014.6529115230. The cubic root of 16117438 is about 252.5992185966.

Adding to 16117438 its reverse (83471161), we get a palindrome (99588599).

The spelling of 16117438 in words is "sixteen million, one hundred seventeen thousand, four hundred thirty-eight".