16559772 has 12 divisors (see below), whose sum is σ = 38639496. Its totient is φ = 5519920.

The previous prime is 16559761. The next prime is 16559779. The reversal of 16559772 is 27795561.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16559779) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 689979 + ... + 690002.

It is an arithmetic number, because the mean of its divisors is an integer number (3219958).

Almost surely, 2^16559772 is an apocalyptic number.

16559772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16559772 is an abundant number, since it is smaller than the sum of its proper divisors (22079724).

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

16559772 is a wasteful number, since it uses less digits than its factorization.

16559772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1379988 (or 1379986 counting only the distinct ones).

The product of its digits is 132300, while the sum is 42.

The square root of 16559772 is about 4069.3699758071. The cubic root of 16559772 is about 254.8892098495.

The spelling of 16559772 in words is "sixteen million, five hundred fifty-nine thousand, seven hundred seventy-two".