28798061 has 2 divisors, whose sum is σ = 28798062. Its totient is φ = 28798060.

The previous prime is 28798043. The next prime is 28798067. The reversal of 28798061 is 16089782.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28622500 + 175561 = 5350^2 + 419^2 .

It is a cyclic number.

It is not a de Polignac number, because 28798061 - 2²² = 24603757 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28798067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14399030 + 14399031.

It is an arithmetic number, because the mean of its divisors is an integer number (14399031).

Almost surely, 2^28798061 is an apocalyptic number.

It is an amenable number.

28798061 is a deficient number, since it is larger than the sum of its proper divisors (1).

28798061 is an equidigital number, since it uses as much as digits as its factorization.

28798061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 28798061 is about 5366.3824873000. The cubic root of 28798061 is about 306.5168937568.

The spelling of 28798061 in words is "twenty-eight million, seven hundred ninety-eight thousand, sixty-one".