28922941 has 2 divisors, whose sum is σ = 28922942. Its totient is φ = 28922940.

The previous prime is 28922923. The next prime is 28922963. The reversal of 28922941 is 14922982.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27258841 + 1664100 = 5221^2 + 1290^2 .

It is a cyclic number.

It is not a de Polignac number, because 28922941 - 2¹⁷ = 28791869 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28922941.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28922911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14461470 + 14461471.

It is an arithmetic number, because the mean of its divisors is an integer number (14461471).

Almost surely, 2^28922941 is an apocalyptic number.

It is an amenable number.

28922941 is a deficient number, since it is larger than the sum of its proper divisors (1).

28922941 is an equidigital number, since it uses as much as digits as its factorization.

28922941 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 37.

The square root of 28922941 is about 5378.0052993652. The cubic root of 28922941 is about 306.9593151318.

The spelling of 28922941 in words is "twenty-eight million, nine hundred twenty-two thousand, nine hundred forty-one".