28370101 has 2 divisors, whose sum is σ = 28370102. Its totient is φ = 28370100.

The previous prime is 28370099. The next prime is 28370107. The reversal of 28370101 is 10107382.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27815076 + 555025 = 5274^2 + 745^2 .

It is a cyclic number.

It is not a de Polignac number, because 28370101 - 2¹ = 28370099 is a prime.

Together with 28370099, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28370107) 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, 14185050 + 14185051.

It is an arithmetic number, because the mean of its divisors is an integer number (14185051).

Almost surely, 2^28370101 is an apocalyptic number.

It is an amenable number.

28370101 is a deficient number, since it is larger than the sum of its proper divisors (1).

28370101 is an equidigital number, since it uses as much as digits as its factorization.

28370101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 28370101 is about 5326.3590753910. The cubic root of 28370101 is about 304.9909555680.

Adding to 28370101 its reverse (10107382), we get a palindrome (38477483).

The spelling of 28370101 in words is "twenty-eight million, three hundred seventy thousand, one hundred one".