28548538 has 8 divisors (see below), whose sum is σ = 42845940. Its totient is φ = 14266560.

The previous prime is 28548529. The next prime is 28548547. The reversal of 28548538 is 83584582.

It is an interprime number because it is at equal distance from previous prime (28548529) and next prime (28548547).

It can be written as a sum of positive squares in 2 ways, for example, as 27594009 + 954529 = 5253^2 + 977^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 28548494 and 28548503.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3868 + ... + 8488.

Almost surely, 2^28548538 is an apocalyptic number.

28548538 is a deficient number, since it is larger than the sum of its proper divisors (14297402).

28548538 is a wasteful number, since it uses less digits than its factorization.

28548538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7712.

The product of its digits is 307200, while the sum is 43.

The square root of 28548538 is about 5343.0831923151. The cubic root of 28548538 is about 305.6290448373.

The spelling of 28548538 in words is "twenty-eight million, five hundred forty-eight thousand, five hundred thirty-eight".