28506148 has 18 divisors (see below), whose sum is σ = 54834038. Its totient is φ = 12957120.

The previous prime is 28506133. The next prime is 28506151. The reversal of 28506148 is 84160582.

It can be written as a sum of positive squares in only one way, i.e., 19554084 + 8952064 = 4422^2 + 2992^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28965 + ... + 29932.

Almost surely, 2^28506148 is an apocalyptic number.

It is an amenable number.

28506148 is a deficient number, since it is larger than the sum of its proper divisors (26327890).

28506148 is a wasteful number, since it uses less digits than its factorization.

28506148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58923 (or 58910 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 28506148 is about 5339.1149079225. The cubic root of 28506148 is about 305.4776998677.

It can be divided in two parts, 2850 and 6148, that added together give a palindrome (8998).

The spelling of 28506148 in words is "twenty-eight million, five hundred six thousand, one hundred forty-eight".