28840601 has 2 divisors, whose sum is σ = 28840602. Its totient is φ = 28840600.

The previous prime is 28840583. The next prime is 28840631. The reversal of 28840601 is 10604882.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22080601 + 6760000 = 4699^2 + 2600^2 .

It is a cyclic number.

It is not a de Polignac number, because 28840601 - 2¹⁴ = 28824217 is a prime.

It is equal to p_1790390 and since 28840601 and 1790390 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (28840631) 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, 14420300 + 14420301.

It is an arithmetic number, because the mean of its divisors is an integer number (14420301).

Almost surely, 2^28840601 is an apocalyptic number.

It is an amenable number.

28840601 is a deficient number, since it is larger than the sum of its proper divisors (1).

28840601 is an equidigital number, since it uses as much as digits as its factorization.

28840601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 28840601 is about 5370.3445885716. The cubic root of 28840601 is about 306.6677466618.

The spelling of 28840601 in words is "twenty-eight million, eight hundred forty thousand, six hundred one".