28720475741 has 2 divisors, whose sum is σ = 28720475742. Its totient is φ = 28720475740.

The previous prime is 28720475723. The next prime is 28720475759. The reversal of 28720475741 is 14757402782.

It is a balanced prime because it is at equal distance from previous prime (28720475723) and next prime (28720475759).

It can be written as a sum of positive squares in only one way, i.e., 15553831225 + 13166644516 = 124715^2 + 114746^2 .

It is a cyclic number.

It is not a de Polignac number, because 28720475741 - 2²² = 28716281437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28720475761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14360237870 + 14360237871.

It is an arithmetic number, because the mean of its divisors is an integer number (14360237871).

Almost surely, 2^28720475741 is an apocalyptic number.

It is an amenable number.

28720475741 is a deficient number, since it is larger than the sum of its proper divisors (1).

28720475741 is an equidigital number, since it uses as much as digits as its factorization.

28720475741 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 878080, while the sum is 47.

The spelling of 28720475741 in words is "twenty-eight billion, seven hundred twenty million, four hundred seventy-five thousand, seven hundred forty-one".