28922371 has 2 divisors, whose sum is σ = 28922372. Its totient is φ = 28922370.

The previous prime is 28922363. The next prime is 28922407. The reversal of 28922371 is 17322982.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28922371 - 2³ = 28922363 is a prime.

It is not a weakly prime, because it can be changed into another prime (28922071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14461185 + 14461186.

It is an arithmetic number, because the mean of its divisors is an integer number (14461186).

Almost surely, 2^28922371 is an apocalyptic number.

28922371 is a deficient number, since it is larger than the sum of its proper divisors (1).

28922371 is an equidigital number, since it uses as much as digits as its factorization.

28922371 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 34.

The square root of 28922371 is about 5377.9523054784. The cubic root of 28922371 is about 306.9572986476.

The spelling of 28922371 in words is "twenty-eight million, nine hundred twenty-two thousand, three hundred seventy-one".