16652889 has 12 divisors (see below), whose sum is σ = 26241072. Its totient is φ = 10092600.

The previous prime is 16652869. The next prime is 16652969. The reversal of 16652889 is 98825661.

It is not a de Polignac number, because 16652889 - 2⁸ = 16652633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16652869) 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, 84007 + ... + 84204.

It is an arithmetic number, because the mean of its divisors is an integer number (2186756).

Almost surely, 2^16652889 is an apocalyptic number.

It is an amenable number.

16652889 is a deficient number, since it is larger than the sum of its proper divisors (9588183).

16652889 is a wasteful number, since it uses less digits than its factorization.

16652889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168228 (or 168225 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 16652889 is about 4080.7951431063. The cubic root of 16652889 is about 255.3660716876.

It can be divided in two parts, 1665 and 2889, that added together give a palindrome (4554).

The spelling of 16652889 in words is "sixteen million, six hundred fifty-two thousand, eight hundred eighty-nine".