28647703 has 20 divisors (see below), whose sum is σ = 35496400. Its totient is φ = 23110752.

The previous prime is 28647677. The next prime is 28647709. The reversal of 28647703 is 30774682.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is not a de Polignac number, because 28647703 - 2⁹ = 28647191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28647709) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1685151 + ... + 1685167.

It is an arithmetic number, because the mean of its divisors is an integer number (1774820).

Almost surely, 2^28647703 is an apocalyptic number.

28647703 is a deficient number, since it is larger than the sum of its proper divisors (6848697).

28647703 is an frugal number, since it uses more digits than its factorization.

28647703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89 (or 24 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 37.

The square root of 28647703 is about 5352.3549022837. The cubic root of 28647703 is about 305.9825092883.

The spelling of 28647703 in words is "twenty-eight million, six hundred forty-seven thousand, seven hundred three".