16657072 has 40 divisors (see below), whose sum is σ = 34286000. Its totient is φ = 7817472.

The previous prime is 16657063. The next prime is 16657103. The reversal of 16657072 is 27075661.

It is a super-2 number, since 2×16657072² = 554916095226368, which contains 22 as substring.

It is an unprimeable number.

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, 47554 + ... + 47902.

It is an arithmetic number, because the mean of its divisors is an integer number (857150).

Almost surely, 2^16657072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16657072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17143000).

16657072 is an abundant number, since it is smaller than the sum of its proper divisors (17628928).

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

16657072 is a wasteful number, since it uses less digits than its factorization.

16657072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533 (or 527 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 16657072 is about 4081.3076335900. The cubic root of 16657072 is about 255.3874514984.

The spelling of 16657072 in words is "sixteen million, six hundred fifty-seven thousand, seventy-two".