28648468 has 24 divisors (see below), whose sum is σ = 53248104. Its totient is φ = 13440000.

The previous prime is 28648457. The next prime is 28648483. The reversal of 28648468 is 86484682.

It can be written as a sum of positive squares in 4 ways, for example, as 18421264 + 10227204 = 4292^2 + 3198^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40518 + ... + 41218.

It is an arithmetic number, because the mean of its divisors is an integer number (2218671).

Almost surely, 2^28648468 is an apocalyptic number.

It is an amenable number.

28648468 is a deficient number, since it is larger than the sum of its proper divisors (24599636).

28648468 is a wasteful number, since it uses less digits than its factorization.

28648468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1323 (or 1321 counting only the distinct ones).

The product of its digits is 589824, while the sum is 46.

The square root of 28648468 is about 5352.4263656775. The cubic root of 28648468 is about 305.9852328870.

The spelling of 28648468 in words is "twenty-eight million, six hundred forty-eight thousand, four hundred sixty-eight".