28619137 has 2 divisors, whose sum is σ = 28619138. Its totient is φ = 28619136.

The previous prime is 28619113. The next prime is 28619197. The reversal of 28619137 is 73191682.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22743361 + 5875776 = 4769^2 + 2424^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28619137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28619096 and 28619105.

It is not a weakly prime, because it can be changed into another prime (28619197) 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, 14309568 + 14309569.

It is an arithmetic number, because the mean of its divisors is an integer number (14309569).

Almost surely, 2^28619137 is an apocalyptic number.

It is an amenable number.

28619137 is a deficient number, since it is larger than the sum of its proper divisors (1).

28619137 is an equidigital number, since it uses as much as digits as its factorization.

28619137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 37.

The square root of 28619137 is about 5349.6856917019. The cubic root of 28619137 is about 305.8807721819.

The spelling of 28619137 in words is "twenty-eight million, six hundred nineteen thousand, one hundred thirty-seven".