28042343 has 8 divisors (see below), whose sum is σ = 32124288. Its totient is φ = 23979384.

The previous prime is 28042307. The next prime is 28042349. The reversal of 28042343 is 34324082.

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 28042343 - 2⁶ = 28042279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28042349) 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, 1421 + ... + 7622.

It is an arithmetic number, because the mean of its divisors is an integer number (4015536).

Almost surely, 2^28042343 is an apocalyptic number.

28042343 is a deficient number, since it is larger than the sum of its proper divisors (4081945).

28042343 is an equidigital number, since it uses as much as digits as its factorization.

28042343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9493.

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 28042343 is about 5295.5021480498. The cubic root of 28042343 is about 303.8118894817.

The spelling of 28042343 in words is "twenty-eight million, forty-two thousand, three hundred forty-three".