28836240947 has 2 divisors, whose sum is σ = 28836240948. Its totient is φ = 28836240946.

The previous prime is 28836240943. The next prime is 28836240989. The reversal of 28836240947 is 74904263882.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28836240947 - 2² = 28836240943 is a prime.

It is not a weakly prime, because it can be changed into another prime (28836240943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14418120473 + 14418120474.

It is an arithmetic number, because the mean of its divisors is an integer number (14418120474).

Almost surely, 2^28836240947 is an apocalyptic number.

28836240947 is a deficient number, since it is larger than the sum of its proper divisors (1).

28836240947 is an equidigital number, since it uses as much as digits as its factorization.

28836240947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4644864, while the sum is 53.

The spelling of 28836240947 in words is "twenty-eight billion, eight hundred thirty-six million, two hundred forty thousand, nine hundred forty-seven".