28054493 has 2 divisors, whose sum is σ = 28054494. Its totient is φ = 28054492.

The previous prime is 28054463. The next prime is 28054501. The reversal of 28054493 is 39445082.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23551609 + 4502884 = 4853^2 + 2122^2 .

It is a cyclic number.

It is not a de Polignac number, because 28054493 - 2²⁰ = 27005917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28054463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14027246 + 14027247.

It is an arithmetic number, because the mean of its divisors is an integer number (14027247).

Almost surely, 2^28054493 is an apocalyptic number.

It is an amenable number.

28054493 is a deficient number, since it is larger than the sum of its proper divisors (1).

28054493 is an equidigital number, since it uses as much as digits as its factorization.

28054493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 28054493 is about 5296.6492238018. The cubic root of 28054493 is about 303.8557610116.

The spelling of 28054493 in words is "twenty-eight million, fifty-four thousand, four hundred ninety-three".