16672389 has 12 divisors (see below), whose sum is σ = 22974048. Its totient is φ = 10754520.

The previous prime is 16672387. The next prime is 16672391. The reversal of 16672389 is 98327661.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (16672387) and next prime (16672391).

It is not a de Polignac number, because 16672389 - 2¹ = 16672387 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16672389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16672387) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9 + ... + 5774.

It is an arithmetic number, because the mean of its divisors is an integer number (1914504).

Almost surely, 2^16672389 is an apocalyptic number.

It is an amenable number.

16672389 is a deficient number, since it is larger than the sum of its proper divisors (6301659).

16672389 is an equidigital number, since it uses as much as digits as its factorization.

16672389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5848 (or 5817 counting only the distinct ones).

The product of its digits is 108864, while the sum is 42.

The square root of 16672389 is about 4083.1836843326. The cubic root of 16672389 is about 255.4657079728.

The spelling of 16672389 in words is "sixteen million, six hundred seventy-two thousand, three hundred eighty-nine".