28169630 has 8 divisors (see below), whose sum is σ = 50705352. Its totient is φ = 11267848.

The previous prime is 28169627. The next prime is 28169639. The reversal of 28169630 is 3696182.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28169639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1408472 + ... + 1408491.

It is an arithmetic number, because the mean of its divisors is an integer number (6338169).

Almost surely, 2^28169630 is an apocalyptic number.

28169630 is a deficient number, since it is larger than the sum of its proper divisors (22535722).

28169630 is a wasteful number, since it uses less digits than its factorization.

28169630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2816970.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 28169630 is about 5307.5069477109. The cubic root of 28169630 is about 304.2708732419.

The spelling of 28169630 in words is "twenty-eight million, one hundred sixty-nine thousand, six hundred thirty".