28819741 has 2 divisors, whose sum is σ = 28819742. Its totient is φ = 28819740.

The previous prime is 28819733. The next prime is 28819783. The reversal of 28819741 is 14791882.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18028516 + 10791225 = 4246^2 + 3285^2 .

It is a cyclic number.

It is not a de Polignac number, because 28819741 - 2³ = 28819733 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28819694 and 28819703.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28819711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14409870 + 14409871.

It is an arithmetic number, because the mean of its divisors is an integer number (14409871).

Almost surely, 2^28819741 is an apocalyptic number.

It is an amenable number.

28819741 is a deficient number, since it is larger than the sum of its proper divisors (1).

28819741 is an equidigital number, since it uses as much as digits as its factorization.

28819741 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32256, while the sum is 40.

The square root of 28819741 is about 5368.4020900078. The cubic root of 28819741 is about 306.5937926768.

The spelling of 28819741 in words is "twenty-eight million, eight hundred nineteen thousand, seven hundred forty-one".