28746427 has 2 divisors, whose sum is σ = 28746428. Its totient is φ = 28746426.

The previous prime is 28746413. The next prime is 28746463. The reversal of 28746427 is 72464782.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28746427 - 2¹¹ = 28744379 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28746427.

It is not a weakly prime, because it can be changed into another prime (28746127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14373213 + 14373214.

It is an arithmetic number, because the mean of its divisors is an integer number (14373214).

Almost surely, 2^28746427 is an apocalyptic number.

28746427 is a deficient number, since it is larger than the sum of its proper divisors (1).

28746427 is an equidigital number, since it uses as much as digits as its factorization.

28746427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 150528, while the sum is 40.

The square root of 28746427 is about 5361.5694530613. The cubic root of 28746427 is about 306.3335925079. Note that the first 3 decimals are identical.

The spelling of 28746427 in words is "twenty-eight million, seven hundred forty-six thousand, four hundred twenty-seven".