28292101 has 2 divisors, whose sum is σ = 28292102. Its totient is φ = 28292100.

The previous prime is 28292071. The next prime is 28292107. The reversal of 28292101 is 10129282.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14976900 + 13315201 = 3870^2 + 3649^2 .

It is a cyclic number.

It is not a de Polignac number, because 28292101 - 2⁷ = 28291973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28292107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14146050 + 14146051.

It is an arithmetic number, because the mean of its divisors is an integer number (14146051).

Almost surely, 2^28292101 is an apocalyptic number.

It is an amenable number.

28292101 is a deficient number, since it is larger than the sum of its proper divisors (1).

28292101 is an equidigital number, since it uses as much as digits as its factorization.

28292101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 28292101 is about 5319.0319607989. The cubic root of 28292101 is about 304.7111876793.

The spelling of 28292101 in words is "twenty-eight million, two hundred ninety-two thousand, one hundred one".