16616572 has 12 divisors (see below), whose sum is σ = 33233200. Its totient is φ = 7121376.

The previous prime is 16616569. The next prime is 16616573. The reversal of 16616572 is 27561661.

It is a happy number.

16616572 is an admirable number.

It is a super-2 number, since 2×16616572² = 552220930062368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16616573) 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, 296697 + ... + 296752.

Almost surely, 2^16616572 is an apocalyptic number.

It is an amenable number.

16616572 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

16616572 is a wasteful number, since it uses less digits than its factorization.

16616572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593460 (or 593458 counting only the distinct ones).

The product of its digits is 15120, while the sum is 34.

The square root of 16616572 is about 4076.3429688877. The cubic root of 16616572 is about 255.1803005270.

The spelling of 16616572 in words is "sixteen million, six hundred sixteen thousand, five hundred seventy-two".