28147048 has 16 divisors (see below), whose sum is σ = 53499780. Its totient is φ = 13880448.

The previous prime is 28147001. The next prime is 28147073. The reversal of 28147048 is 84074182.

It can be written as a sum of positive squares in 2 ways, for example, as 27019204 + 1127844 = 5198^2 + 1062^2 .

It is a super-2 number, since 2×28147048² = 1584512622228608, which contains 22 as substring.

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, 23515 + ... + 24682.

Almost surely, 2^28147048 is an apocalyptic number.

It is an amenable number.

28147048 is a deficient number, since it is larger than the sum of its proper divisors (25352732).

28147048 is a wasteful number, since it uses less digits than its factorization.

28147048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48276 (or 48272 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 34.

The square root of 28147048 is about 5305.3791570443. The cubic root of 28147048 is about 304.1895459198.

The spelling of 28147048 in words is "twenty-eight million, one hundred forty-seven thousand, forty-eight".