16978068 has 36 divisors (see below), whose sum is σ = 43563520. Its totient is φ = 5574096.

The previous prime is 16978061. The next prime is 16978097. The reversal of 16978068 is 86087961.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16978061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1108 + ... + 5931.

Almost surely, 2^16978068 is an apocalyptic number.

16978068 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

16978068 is an abundant number, since it is smaller than the sum of its proper divisors (26585452).

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

16978068 is a wasteful number, since it uses less digits than its factorization.

16978068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7116 (or 7111 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 16978068 is about 4120.4451215858. The cubic root of 16978068 is about 257.0175362882.

The spelling of 16978068 in words is "sixteen million, nine hundred seventy-eight thousand, sixty-eight".