16652881 has 8 divisors (see below), whose sum is σ = 19085120. Its totient is φ = 14233968.

The previous prime is 16652869. The next prime is 16652969. The reversal of 16652881 is 18825661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16652881 - 2¹³ = 16644689 is a prime.

It is a super-2 number, since 2×16652881² = 554636891200322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16652881.

It is not an unprimeable number, because it can be changed into a prime (16652861) 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 in 7 ways as a sum of consecutive naturals, for example, 486 + ... + 5791.

It is an arithmetic number, because the mean of its divisors is an integer number (2385640).

Almost surely, 2^16652881 is an apocalyptic number.

It is an amenable number.

16652881 is a deficient number, since it is larger than the sum of its proper divisors (2432239).

16652881 is an equidigital number, since it uses as much as digits as its factorization.

16652881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6663.

The product of its digits is 23040, while the sum is 37.

The square root of 16652881 is about 4080.7941629051. The cubic root of 16652881 is about 255.3660307952.

The spelling of 16652881 in words is "sixteen million, six hundred fifty-two thousand, eight hundred eighty-one".