28625133 has 8 divisors (see below), whose sum is σ = 39826368. Its totient is φ = 18253664.

The previous prime is 28625131. The next prime is 28625171. The reversal of 28625133 is 33152682.

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

It is a cyclic number.

It is not a de Polignac number, because 28625133 - 2¹ = 28625131 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 28625133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28625131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207360 + ... + 207497.

It is an arithmetic number, because the mean of its divisors is an integer number (4978296).

Almost surely, 2^28625133 is an apocalyptic number.

28625133 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

28625133 is a deficient number, since it is larger than the sum of its proper divisors (11201235).

28625133 is a wasteful number, since it uses less digits than its factorization.

28625133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414883.

The product of its digits is 8640, while the sum is 30.

The square root of 28625133 is about 5350.2460691075. The cubic root of 28625133 is about 305.9021324002.

The spelling of 28625133 in words is "twenty-eight million, six hundred twenty-five thousand, one hundred thirty-three".