28636272 has 60 divisors (see below), whose sum is σ = 91593840. Its totient is φ = 8181504.

The previous prime is 28636259. The next prime is 28636273. The reversal of 28636272 is 27263682.

28636272 is a `hidden beast` number, since 28 + 6 + 3 + 627 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28636273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13197 + ... + 15212.

It is an arithmetic number, because the mean of its divisors is an integer number (1526564).

Almost surely, 2^28636272 is an apocalyptic number.

It is an amenable number.

28636272 is an abundant number, since it is smaller than the sum of its proper divisors (62957568).

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

28636272 is a wasteful number, since it uses less digits than its factorization.

28636272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28430 (or 28421 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 28636272 is about 5351.2869480154. The cubic root of 28636272 is about 305.9418061834.

The spelling of 28636272 in words is "twenty-eight million, six hundred thirty-six thousand, two hundred seventy-two".