28298048 has 14 divisors (see below), whose sum is σ = 56154066. Its totient is φ = 14148992.

The previous prime is 28298041. The next prime is 28298057. The reversal of 28298048 is 84089282.

It can be written as a sum of positive squares in only one way, i.e., 20502784 + 7795264 = 4528^2 + 2792^2 .

It is a super-2 number, since 2×28298048² = 1601559041220608, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28297996 and 28298014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28298041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221015 + ... + 221142.

Almost surely, 2^28298048 is an apocalyptic number.

It is an amenable number.

28298048 is a deficient number, since it is larger than the sum of its proper divisors (27856018).

28298048 is an equidigital number, since it uses as much as digits as its factorization.

28298048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442169 (or 442159 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 41.

The square root of 28298048 is about 5319.5909617188. The cubic root of 28298048 is about 304.7325362821.

The spelling of 28298048 in words is "twenty-eight million, two hundred ninety-eight thousand, forty-eight".