16996672 has 56 divisors (see below), whose sum is σ = 42062400. Its totient is φ = 6620160.

The previous prime is 16996667. The next prime is 16996687. The reversal of 16996672 is 27669961.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3204 + ... + 6652.

Almost surely, 2^16996672 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 16996672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21031200).

16996672 is an abundant number, since it is smaller than the sum of its proper divisors (25065728).

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

16996672 is a wasteful number, since it uses less digits than its factorization.

16996672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3479 (or 3469 counting only the distinct ones).

The product of its digits is 244944, while the sum is 46.

The square root of 16996672 is about 4122.7020265840. The cubic root of 16996672 is about 257.1113790980. Note that the first 3 decimals are identical.

Subtracting 16996672 from its reverse (27669961), we obtain a square (10673289 = 3267²).

The spelling of 16996672 in words is "sixteen million, nine hundred ninety-six thousand, six hundred seventy-two".