28539463 has 8 divisors (see below), whose sum is σ = 30119600. Its totient is φ = 26967168.

The previous prime is 28539449. The next prime is 28539479. The reversal of 28539463 is 36493582.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28539463 - 2⁵ = 28539431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28539163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6493 + ... + 9961.

It is an arithmetic number, because the mean of its divisors is an integer number (3764950).

Almost surely, 2^28539463 is an apocalyptic number.

28539463 is a deficient number, since it is larger than the sum of its proper divisors (1580137).

28539463 is a wasteful number, since it uses less digits than its factorization.

28539463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3921.

The product of its digits is 155520, while the sum is 40.

The square root of 28539463 is about 5342.2338960401. The cubic root of 28539463 is about 305.5966569847.

The spelling of 28539463 in words is "twenty-eight million, five hundred thirty-nine thousand, four hundred sixty-three".