28054403 has 8 divisors (see below), whose sum is σ = 31989888. Its totient is φ = 24372864.

The previous prime is 28054387. The next prime is 28054409. The reversal of 28054403 is 30445082.

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 28054403 - 2⁴ = 28054387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28054409) 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 in 7 ways as a sum of consecutive naturals, for example, 63251 + ... + 63692.

It is an arithmetic number, because the mean of its divisors is an integer number (3998736).

Almost surely, 2^28054403 is an apocalyptic number.

28054403 is a deficient number, since it is larger than the sum of its proper divisors (3935485).

28054403 is a wasteful number, since it uses less digits than its factorization.

28054403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126973.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 28054403 is about 5296.6407278576. The cubic root of 28054403 is about 303.8554360839.

Adding to 28054403 its reverse (30445082), we get a palindrome (58499485).

The spelling of 28054403 in words is "twenty-eight million, fifty-four thousand, four hundred three".