16472138 has 4 divisors (see below), whose sum is σ = 24708210. Its totient is φ = 8236068.

The previous prime is 16472089. The next prime is 16472143. The reversal of 16472138 is 83127461.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 10156969 + 6315169 = 3187^2 + 2513^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 4118033 + ... + 4118036.

Almost surely, 2^16472138 is an apocalyptic number.

16472138 is a deficient number, since it is larger than the sum of its proper divisors (8236072).

16472138 is an equidigital number, since it uses as much as digits as its factorization.

16472138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8236071.

The product of its digits is 8064, while the sum is 32.

The square root of 16472138 is about 4058.5881781723. The cubic root of 16472138 is about 254.4387914193.

Adding to 16472138 its reverse (83127461), we get a palindrome (99599599).

The spelling of 16472138 in words is "sixteen million, four hundred seventy-two thousand, one hundred thirty-eight".