28314947 has 2 divisors, whose sum is σ = 28314948. Its totient is φ = 28314946.

The previous prime is 28314929. The next prime is 28314961. The reversal of 28314947 is 74941382.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28314947 - 2¹⁴ = 28298563 is a prime.

It is a super-2 number, since 2×28314947² = 1603472447225618, which contains 22 as substring.

It is a Chen prime.

It is equal to p_1759853 and since 28314947 and 1759853 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28314947.

It is not a weakly prime, because it can be changed into another prime (28314977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14157473 + 14157474.

It is an arithmetic number, because the mean of its divisors is an integer number (14157474).

Almost surely, 2^28314947 is an apocalyptic number.

28314947 is a deficient number, since it is larger than the sum of its proper divisors (1).

28314947 is an equidigital number, since it uses as much as digits as its factorization.

28314947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 38.

The square root of 28314947 is about 5321.1790986585. The cubic root of 28314947 is about 304.7931841682.

The spelling of 28314947 in words is "twenty-eight million, three hundred fourteen thousand, nine hundred forty-seven".