28649323 has 2 divisors, whose sum is σ = 28649324. Its totient is φ = 28649322.

The previous prime is 28649317. The next prime is 28649339. The reversal of 28649323 is 32394682.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28649323 - 2⁹ = 28648811 is a prime.

It is not a weakly prime, because it can be changed into another prime (28649393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14324661 + 14324662.

It is an arithmetic number, because the mean of its divisors is an integer number (14324662).

Almost surely, 2^28649323 is an apocalyptic number.

28649323 is a deficient number, since it is larger than the sum of its proper divisors (1).

28649323 is an equidigital number, since it uses as much as digits as its factorization.

28649323 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 37.

The square root of 28649323 is about 5352.5062354004. The cubic root of 28649323 is about 305.9882768516.

The spelling of 28649323 in words is "twenty-eight million, six hundred forty-nine thousand, three hundred twenty-three".