28854473 has 2 divisors, whose sum is σ = 28854474. Its totient is φ = 28854472.

The previous prime is 28854401. The next prime is 28854479. The reversal of 28854473 is 37445882.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17205904 + 11648569 = 4148^2 + 3413^2 .

It is a cyclic number.

It is not a de Polignac number, because 28854473 - 2¹⁰ = 28853449 is a prime.

It is a super-2 number, since 2×28854473² = 1665161224215458, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28854473.

It is not a weakly prime, because it can be changed into another prime (28854479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14427236 + 14427237.

It is an arithmetic number, because the mean of its divisors is an integer number (14427237).

Almost surely, 2^28854473 is an apocalyptic number.

It is an amenable number.

28854473 is a deficient number, since it is larger than the sum of its proper divisors (1).

28854473 is an equidigital number, since it uses as much as digits as its factorization.

28854473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 215040, while the sum is 41.

The square root of 28854473 is about 5371.6359705401. The cubic root of 28854473 is about 306.7169066765.

The spelling of 28854473 in words is "twenty-eight million, eight hundred fifty-four thousand, four hundred seventy-three".