42728293 has 8 divisors (see below), whose sum is σ = 45342720. Its totient is φ = 40125120.

The previous prime is 42728291. The next prime is 42728333. The reversal of 42728293 is 39282724.

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 42728293 - 2¹ = 42728291 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 (42728291) 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, 5788 + ... + 10906.

It is an arithmetic number, because the mean of its divisors is an integer number (5667840).

Almost surely, 2^42728293 is an apocalyptic number.

It is an amenable number.

42728293 is a deficient number, since it is larger than the sum of its proper divisors (2614427).

42728293 is a wasteful number, since it uses less digits than its factorization.

42728293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5627.

The product of its digits is 48384, while the sum is 37.

The square root of 42728293 is about 6536.6882287593. The cubic root of 42728293 is about 349.6003410891.

The spelling of 42728293 in words is "forty-two million, seven hundred twenty-eight thousand, two hundred ninety-three".