28045747 has 2 divisors, whose sum is σ = 28045748. Its totient is φ = 28045746.

The previous prime is 28045723. The next prime is 28045811. The reversal of 28045747 is 74754082.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28045747 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28045447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14022873 + 14022874.

It is an arithmetic number, because the mean of its divisors is an integer number (14022874).

Almost surely, 2^28045747 is an apocalyptic number.

28045747 is a deficient number, since it is larger than the sum of its proper divisors (1).

28045747 is an equidigital number, since it uses as much as digits as its factorization.

28045747 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62720, while the sum is 37.

The square root of 28045747 is about 5295.8235431328. The cubic root of 28045747 is about 303.8241820093.

The spelling of 28045747 in words is "twenty-eight million, forty-five thousand, seven hundred forty-seven".