28038001 has 2 divisors, whose sum is σ = 28038002. Its totient is φ = 28038000.

The previous prime is 28037993. The next prime is 28038029. The reversal of 28038001 is 10083082.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27040000 + 998001 = 5200^2 + 999^2 .

It is a cyclic number.

It is not a de Polignac number, because 28038001 - 2³ = 28037993 is a prime.

It is a super-2 number, since 2×28038001² = 1572259000152002, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28038401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14019000 + 14019001.

It is an arithmetic number, because the mean of its divisors is an integer number (14019001).

Almost surely, 2^28038001 is an apocalyptic number.

It is an amenable number.

28038001 is a deficient number, since it is larger than the sum of its proper divisors (1).

28038001 is an equidigital number, since it uses as much as digits as its factorization.

28038001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 28038001 is about 5295.0921616153. The cubic root of 28038001 is about 303.7962082039.

The spelling of 28038001 in words is "twenty-eight million, thirty-eight thousand, one".