28478683 has 2 divisors, whose sum is σ = 28478684. Its totient is φ = 28478682.

The previous prime is 28478657. The next prime is 28478693. The reversal of 28478683 is 38687482.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28478683 - 2¹⁷ = 28347611 is a prime.

It is a super-2 number, since 2×28478683² = 1622070770828978, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28478603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14239341 + 14239342.

It is an arithmetic number, because the mean of its divisors is an integer number (14239342).

Almost surely, 2^28478683 is an apocalyptic number.

28478683 is a deficient number, since it is larger than the sum of its proper divisors (1).

28478683 is an equidigital number, since it uses as much as digits as its factorization.

28478683 is an evil number, because the sum of its binary digits is even.

The product of its digits is 516096, while the sum is 46.

The square root of 28478683 is about 5336.5422325697. The cubic root of 28478683 is about 305.3795614945.

It can be divided in two parts, 28478 and 683, that added together give a triangular number (29161 = T₂₄₁).

The spelling of 28478683 in words is "twenty-eight million, four hundred seventy-eight thousand, six hundred eighty-three".