28751941 has 2 divisors, whose sum is σ = 28751942. Its totient is φ = 28751940.

The previous prime is 28751929. The next prime is 28751969. The reversal of 28751941 is 14915782.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28579716 + 172225 = 5346^2 + 415^2 .

It is a cyclic number.

It is not a de Polignac number, because 28751941 - 2¹⁹ = 28227653 is a prime.

It is a super-2 number, since 2×28751941² = 1653348222534962, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28751941.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28751141) 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, 14375970 + 14375971.

It is an arithmetic number, because the mean of its divisors is an integer number (14375971).

Almost surely, 2^28751941 is an apocalyptic number.

It is an amenable number.

28751941 is a deficient number, since it is larger than the sum of its proper divisors (1).

28751941 is an equidigital number, since it uses as much as digits as its factorization.

28751941 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 37.

The square root of 28751941 is about 5362.0836435102. The cubic root of 28751941 is about 306.3531777296.

It can be divided in two parts, 28751 and 941, that added together give a palindrome (29692).

The spelling of 28751941 in words is "twenty-eight million, seven hundred fifty-one thousand, nine hundred forty-one".