28013343 has 8 divisors (see below), whose sum is σ = 37580928. Its totient is φ = 18560664.

The previous prime is 28013317. The next prime is 28013347. The reversal of 28013343 is 34331082.

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

It is not a de Polignac number, because 28013343 - 2⁵ = 28013311 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28013347) 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, 28155 + ... + 29132.

It is an arithmetic number, because the mean of its divisors is an integer number (4697616).

Almost surely, 2^28013343 is an apocalyptic number.

28013343 is a deficient number, since it is larger than the sum of its proper divisors (9567585).

28013343 is a wasteful number, since it uses less digits than its factorization.

28013343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57453.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 28013343 is about 5292.7632669523. The cubic root of 28013343 is about 303.7071242976.

The spelling of 28013343 in words is "twenty-eight million, thirteen thousand, three hundred forty-three".