28132663 has 8 divisors (see below), whose sum is σ = 30373056. Its totient is φ = 25903200.

The previous prime is 28132661. The next prime is 28132721. The reversal of 28132663 is 36623182.

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 28132663 - 2¹ = 28132661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28132661) 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, 3093 + ... + 8113.

It is an arithmetic number, because the mean of its divisors is an integer number (3796632).

Almost surely, 2^28132663 is an apocalyptic number.

28132663 is a deficient number, since it is larger than the sum of its proper divisors (2240393).

28132663 is a wasteful number, since it uses less digits than its factorization.

28132663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5465.

The product of its digits is 10368, while the sum is 31.

The square root of 28132663 is about 5304.0232842626. The cubic root of 28132663 is about 304.1377167752.

It can be divided in two parts, 2813 and 2663, that added together give a square (5476 = 74²).

The spelling of 28132663 in words is "twenty-eight million, one hundred thirty-two thousand, six hundred sixty-three".