16988427 has 16 divisors (see below), whose sum is σ = 25320480. Its totient is φ = 11257056.

The previous prime is 16988399. The next prime is 16988501. The reversal of 16988427 is 72488961.

It is not a de Polignac number, because 16988427 - 2¹¹ = 16986379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16980427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2853 + ... + 6489.

It is an arithmetic number, because the mean of its divisors is an integer number (1582530).

Almost surely, 2^16988427 is an apocalyptic number.

16988427 is a deficient number, since it is larger than the sum of its proper divisors (8332053).

16988427 is a wasteful number, since it uses less digits than its factorization.

16988427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3819 (or 3813 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 16988427 is about 4121.7019542902. The cubic root of 16988427 is about 257.0697978952.

The spelling of 16988427 in words is "sixteen million, nine hundred eighty-eight thousand, four hundred twenty-seven".