16988426 has 32 divisors (see below), whose sum is σ = 31570560. Its totient is φ = 6676416.

The previous prime is 16988399. The next prime is 16988501. The reversal of 16988426 is 62488961.

It is a happy number.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48785 + ... + 49131.

It is an arithmetic number, because the mean of its divisors is an integer number (986580).

Almost surely, 2^16988426 is an apocalyptic number.

16988426 is a deficient number, since it is larger than the sum of its proper divisors (14582134).

16988426 is a wasteful number, since it uses less digits than its factorization.

16988426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638.

The product of its digits is 165888, while the sum is 44.

The square root of 16988426 is about 4121.7018329811. The cubic root of 16988426 is about 257.0697928512.

The spelling of 16988426 in words is "sixteen million, nine hundred eighty-eight thousand, four hundred twenty-six".