16989552 has 60 divisors (see below), whose sum is σ = 47973120. Its totient is φ = 5612544.

The previous prime is 16989547. The next prime is 16989569. The reversal of 16989552 is 25598961.

16989552 is a `hidden beast` number, since 1 + 6 + 98 + 9 + 552 = 666.

It is a super-4 number, since 4×16989552⁴ (a number of 30 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16989498 and 16989507.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17824 + ... + 18752.

It is an arithmetic number, because the mean of its divisors is an integer number (799552).

Almost surely, 2^16989552 is an apocalyptic number.

16989552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16989552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23986560).

16989552 is an abundant number, since it is smaller than the sum of its proper divisors (30983568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16989552 is a wasteful number, since it uses less digits than its factorization.

16989552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1070 (or 1061 counting only the distinct ones).

The product of its digits is 194400, while the sum is 45.

The square root of 16989552 is about 4121.8384247809. The cubic root of 16989552 is about 257.0754722903.

The spelling of 16989552 in words is "sixteen million, nine hundred eighty-nine thousand, five hundred fifty-two".