16672388 has 6 divisors (see below), whose sum is σ = 29176686. Its totient is φ = 8336192.

The previous prime is 16672387. The next prime is 16672391. The reversal of 16672388 is 88327661.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 16581184 + 91204 = 4072^2 + 302^2 .

It is not an unprimeable number, because it can be changed into a prime (16672387) 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 as a sum of consecutive naturals, namely, 2084045 + ... + 2084052.

It is an arithmetic number, because the mean of its divisors is an integer number (4862781).

Almost surely, 2^16672388 is an apocalyptic number.

It is an amenable number.

16672388 is a deficient number, since it is larger than the sum of its proper divisors (12504298).

16672388 is a wasteful number, since it uses less digits than its factorization.

16672388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4168101 (or 4168099 counting only the distinct ones).

The product of its digits is 96768, while the sum is 41.

The square root of 16672388 is about 4083.1835618791. The cubic root of 16672388 is about 255.4657028653.

The spelling of 16672388 in words is "sixteen million, six hundred seventy-two thousand, three hundred eighty-eight".