28038337 has 2 divisors, whose sum is σ = 28038338. Its totient is φ = 28038336.

The previous prime is 28038299. The next prime is 28038347. The reversal of 28038337 is 73383082.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17338896 + 10699441 = 4164^2 + 3271^2 .

It is a cyclic number.

It is not a de Polignac number, because 28038337 - 2¹¹ = 28036289 is a prime.

It is a super-2 number, since 2×28038337² = 1572296683451138, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28038347) 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, 14019168 + 14019169.

It is an arithmetic number, because the mean of its divisors is an integer number (14019169).

Almost surely, 2^28038337 is an apocalyptic number.

It is an amenable number.

28038337 is a deficient number, since it is larger than the sum of its proper divisors (1).

28038337 is an equidigital number, since it uses as much as digits as its factorization.

28038337 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 28038337 is about 5295.1238890134. The cubic root of 28038337 is about 303.7974217369.

The spelling of 28038337 in words is "twenty-eight million, thirty-eight thousand, three hundred thirty-seven".