28630055 has 16 divisors (see below), whose sum is σ = 37739520. Its totient is φ = 20753568.

The previous prime is 28630051. The next prime is 28630061. The reversal of 28630055 is 55003682.

It is a cyclic number.

It is not a de Polignac number, because 28630055 - 2² = 28630051 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28630051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4367 + ... + 8736.

It is an arithmetic number, because the mean of its divisors is an integer number (2358720).

Almost surely, 2^28630055 is an apocalyptic number.

28630055 is a deficient number, since it is larger than the sum of its proper divisors (9109465).

28630055 is a wasteful number, since it uses less digits than its factorization.

28630055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13150.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 28630055 is about 5350.7060281798. The cubic root of 28630055 is about 305.9196643596.

The spelling of 28630055 in words is "twenty-eight million, six hundred thirty thousand, fifty-five".