28650047 has 2 divisors, whose sum is σ = 28650048. Its totient is φ = 28650046.

The previous prime is 28650007. The next prime is 28650067. The reversal of 28650047 is 74005682.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28650047 - 2¹⁸ = 28387903 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 28649995 and 28650022.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28650007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14325023 + 14325024.

It is an arithmetic number, because the mean of its divisors is an integer number (14325024).

Almost surely, 2^28650047 is an apocalyptic number.

28650047 is a deficient number, since it is larger than the sum of its proper divisors (1).

28650047 is an equidigital number, since it uses as much as digits as its factorization.

28650047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 28650047 is about 5352.5738668420. The cubic root of 28650047 is about 305.9908543837.

The spelling of 28650047 in words is "twenty-eight million, six hundred fifty thousand, forty-seven".