42248728 has 16 divisors (see below), whose sum is σ = 79475760. Its totient is φ = 21055200.

The previous prime is 42248707. The next prime is 42248729. The reversal of 42248728 is 82784224.

It is a nialpdrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42248729) 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, 6003 + ... + 10978.

It is an arithmetic number, because the mean of its divisors is an integer number (4967235).

Almost surely, 2^42248728 is an apocalyptic number.

It is an amenable number.

42248728 is a deficient number, since it is larger than the sum of its proper divisors (37227032).

42248728 is a wasteful number, since it uses less digits than its factorization.

42248728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17298 (or 17294 counting only the distinct ones).

The product of its digits is 57344, while the sum is 37.

The square root of 42248728 is about 6499.9021531097. The cubic root of 42248728 is about 348.2874930838.

The spelling of 42248728 in words is "forty-two million, two hundred forty-eight thousand, seven hundred twenty-eight".