28883847 has 16 divisors (see below), whose sum is σ = 40061952. Its totient is φ = 18490560.

The previous prime is 28883843. The next prime is 28883849. The reversal of 28883847 is 74838882.

It is not a de Polignac number, because 28883847 - 2² = 28883843 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28883796 and 28883805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28883843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11608 + ... + 13874.

It is an arithmetic number, because the mean of its divisors is an integer number (2503872).

Almost surely, 2^28883847 is an apocalyptic number.

28883847 is a deficient number, since it is larger than the sum of its proper divisors (11178105).

28883847 is a wasteful number, since it uses less digits than its factorization.

28883847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2438.

The product of its digits is 688128, while the sum is 48.

The square root of 28883847 is about 5374.3694513868. The cubic root of 28883847 is about 306.8209511679.

The spelling of 28883847 in words is "twenty-eight million, eight hundred eighty-three thousand, eight hundred forty-seven".