28047848 has 8 divisors (see below), whose sum is σ = 52589730. Its totient is φ = 14023920.

The previous prime is 28047829. The next prime is 28047863. The reversal of 28047848 is 84874082.

It can be written as a sum of positive squares in only one way, i.e., 16337764 + 11710084 = 4042^2 + 3422^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×28047848² = 1573363554862208, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1752983 + ... + 1752998.

Almost surely, 2^28047848 is an apocalyptic number.

It is an amenable number.

28047848 is a deficient number, since it is larger than the sum of its proper divisors (24541882).

28047848 is a wasteful number, since it uses less digits than its factorization.

28047848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3505987 (or 3505983 counting only the distinct ones).

The product of its (nonzero) digits is 114688, while the sum is 41.

The square root of 28047848 is about 5296.0219032780. The cubic root of 28047848 is about 303.8317686459.

The spelling of 28047848 in words is "twenty-eight million, forty-seven thousand, eight hundred forty-eight".