42728998 has 8 divisors (see below), whose sum is σ = 69023808. Its totient is φ = 19721064.

The previous prime is 42728993. The next prime is 42729013. The reversal of 42728998 is 89982724.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42728993) 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, 821686 + ... + 821737.

It is an arithmetic number, because the mean of its divisors is an integer number (8627976).

Almost surely, 2^42728998 is an apocalyptic number.

42728998 is a deficient number, since it is larger than the sum of its proper divisors (26294810).

42728998 is a wasteful number, since it uses less digits than its factorization.

42728998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1643438.

The product of its digits is 580608, while the sum is 49.

The square root of 42728998 is about 6536.7421549270. The cubic root of 42728998 is about 349.6022638344.

The spelling of 42728998 in words is "forty-two million, seven hundred twenty-eight thousand, nine hundred ninety-eight".