28163536 has 10 divisors (see below), whose sum is σ = 54566882. Its totient is φ = 14081760.

The previous prime is 28163503. The next prime is 28163537. The reversal of 28163536 is 63536182.

It can be written as a sum of positive squares in only one way, i.e., 17640000 + 10523536 = 4200^2 + 3244^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28163537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 880095 + ... + 880126.

Almost surely, 2^28163536 is an apocalyptic number.

It is an amenable number.

28163536 is a deficient number, since it is larger than the sum of its proper divisors (26403346).

28163536 is a wasteful number, since it uses less digits than its factorization.

28163536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1760229 (or 1760223 counting only the distinct ones).

The product of its digits is 25920, while the sum is 34.

The square root of 28163536 is about 5306.9328241462. The cubic root of 28163536 is about 304.2489304566.

The spelling of 28163536 in words is "twenty-eight million, one hundred sixty-three thousand, five hundred thirty-six".