28587337 has 2 divisors, whose sum is σ = 28587338. Its totient is φ = 28587336.

The previous prime is 28587331. The next prime is 28587371. The reversal of 28587337 is 73378582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26873856 + 1713481 = 5184^2 + 1309^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28587337 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28587293 and 28587302.

It is not a weakly prime, because it can be changed into another prime (28587331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14293668 + 14293669.

It is an arithmetic number, because the mean of its divisors is an integer number (14293669).

Almost surely, 2^28587337 is an apocalyptic number.

It is an amenable number.

28587337 is a deficient number, since it is larger than the sum of its proper divisors (1).

28587337 is an equidigital number, since it uses as much as digits as its factorization.

28587337 is an evil number, because the sum of its binary digits is even.

The product of its digits is 282240, while the sum is 43.

The square root of 28587337 is about 5346.7127283968. The cubic root of 28587337 is about 305.7674376034.

The spelling of 28587337 in words is "twenty-eight million, five hundred eighty-seven thousand, three hundred thirty-seven".