28169694 has 40 divisors (see below), whose sum is σ = 72141168. Its totient is φ = 8048160.

The previous prime is 28169693. The next prime is 28169707. The reversal of 28169694 is 49696182.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28169693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 11287 + ... + 13554.

Almost surely, 2^28169694 is an apocalyptic number.

28169694 is an abundant number, since it is smaller than the sum of its proper divisors (43971474).

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

28169694 is a wasteful number, since it uses less digits than its factorization.

28169694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24862 (or 24853 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 28169694 is about 5307.5129769036. The cubic root of 28169694 is about 304.2711036712.

The spelling of 28169694 in words is "twenty-eight million, one hundred sixty-nine thousand, six hundred ninety-four".