42728034 has 8 divisors (see below), whose sum is σ = 85456080. Its totient is φ = 14242676.

The previous prime is 42728003. The next prime is 42728039. The reversal of 42728034 is 43082724.

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

42728034 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 42727992 and 42728010.

It is not an unprimeable number, because it can be changed into a prime (42728039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3560664 + ... + 3560675.

It is an arithmetic number, because the mean of its divisors is an integer number (10682010).

Almost surely, 2^42728034 is an apocalyptic number.

42728034 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42728034 is a wasteful number, since it uses less digits than its factorization.

42728034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7121344.

The product of its (nonzero) digits is 10752, while the sum is 30.

The square root of 42728034 is about 6536.6684174738. The cubic root of 42728034 is about 349.5996347135.

The spelling of 42728034 in words is "forty-two million, seven hundred twenty-eight thousand, thirty-four".