16996788 has 18 divisors (see below), whose sum is σ = 42964194. Its totient is φ = 5665584.

The previous prime is 16996769. The next prime is 16996799. The reversal of 16996788 is 88769961.

It can be written as a sum of positive squares in only one way, i.e., 13264164 + 3732624 = 3642^2 + 1932^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 236031 + ... + 236102.

Almost surely, 2^16996788 is an apocalyptic number.

16996788 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

16996788 is an abundant number, since it is smaller than the sum of its proper divisors (25967406).

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

16996788 is a wasteful number, since it uses less digits than its factorization.

16996788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472143 (or 472138 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 54.

The square root of 16996788 is about 4122.7160950034. The cubic root of 16996788 is about 257.1119640135. Note that the first 3 decimals are identical.

The spelling of 16996788 in words is "sixteen million, nine hundred ninety-six thousand, seven hundred eighty-eight".