28332197 has 2 divisors, whose sum is σ = 28332198. Its totient is φ = 28332196.

The previous prime is 28332181. The next prime is 28332229. The reversal of 28332197 is 79123382.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26894596 + 1437601 = 5186^2 + 1199^2 .

It is a cyclic number.

It is not a de Polignac number, because 28332197 - 2⁴ = 28332181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28334197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14166098 + 14166099.

It is an arithmetic number, because the mean of its divisors is an integer number (14166099).

Almost surely, 2^28332197 is an apocalyptic number.

It is an amenable number.

28332197 is a deficient number, since it is larger than the sum of its proper divisors (1).

28332197 is an equidigital number, since it uses as much as digits as its factorization.

28332197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 35.

The square root of 28332197 is about 5322.7997332231. The cubic root of 28332197 is about 304.8550668562.

The spelling of 28332197 in words is "twenty-eight million, three hundred thirty-two thousand, one hundred ninety-seven".