28039463 has 2 divisors, whose sum is σ = 28039464. Its totient is φ = 28039462.

The previous prime is 28039439. The next prime is 28039523. The reversal of 28039463 is 36493082.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28039463 - 2⁶ = 28039399 is a prime.

It is a super-2 number, since 2×28039463² = 1572422970656738, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28039163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14019731 + 14019732.

It is an arithmetic number, because the mean of its divisors is an integer number (14019732).

Almost surely, 2^28039463 is an apocalyptic number.

28039463 is a deficient number, since it is larger than the sum of its proper divisors (1).

28039463 is an equidigital number, since it uses as much as digits as its factorization.

28039463 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 28039463 is about 5295.2302121815. The cubic root of 28039463 is about 303.8014884464.

The spelling of 28039463 in words is "twenty-eight million, thirty-nine thousand, four hundred sixty-three".