28183936 has 64 divisors (see below), whose sum is σ = 63023760. Its totient is φ = 12441600.

The previous prime is 28183927. The next prime is 28183951. The reversal of 28183936 is 63938182.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51826 + ... + 52366.

Almost surely, 2^28183936 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28183936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31511880).

28183936 is an abundant number, since it is smaller than the sum of its proper divisors (34839824).

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

28183936 is a wasteful number, since it uses less digits than its factorization.

28183936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603 (or 591 counting only the distinct ones).

The product of its digits is 62208, while the sum is 40.

The square root of 28183936 is about 5308.8544903774. The cubic root of 28183936 is about 304.3223727048.

The spelling of 28183936 in words is "twenty-eight million, one hundred eighty-three thousand, nine hundred thirty-six".