28056547 has 2 divisors, whose sum is σ = 28056548. Its totient is φ = 28056546.

The previous prime is 28056541. The next prime is 28056569. The reversal of 28056547 is 74565082.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28056547 - 2⁷ = 28056419 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28056541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14028273 + 14028274.

It is an arithmetic number, because the mean of its divisors is an integer number (14028274).

Almost surely, 2^28056547 is an apocalyptic number.

28056547 is a deficient number, since it is larger than the sum of its proper divisors (1).

28056547 is an equidigital number, since it uses as much as digits as its factorization.

28056547 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 67200, while the sum is 37.

The square root of 28056547 is about 5296.8431164232. The cubic root of 28056547 is about 303.8631763954.

The spelling of 28056547 in words is "twenty-eight million, fifty-six thousand, five hundred forty-seven".