16869428 has 24 divisors (see below), whose sum is σ = 30664704. Its totient is φ = 8114400.

The previous prime is 16869421. The next prime is 16869451. The reversal of 16869428 is 82496861.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16869421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10733 + ... + 12203.

It is an arithmetic number, because the mean of its divisors is an integer number (1277696).

Almost surely, 2^16869428 is an apocalyptic number.

It is an amenable number.

16869428 is a deficient number, since it is larger than the sum of its proper divisors (13795276).

16869428 is a wasteful number, since it uses less digits than its factorization.

16869428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1583 (or 1581 counting only the distinct ones).

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

The square root of 16869428 is about 4107.2409230528. The cubic root of 16869428 is about 256.4681578241.

It can be divided in two parts, 168 and 69428, that added together give a palindrome (69596).

The spelling of 16869428 in words is "sixteen million, eight hundred sixty-nine thousand, four hundred twenty-eight".