42648728 has 16 divisors (see below), whose sum is σ = 80087280. Its totient is φ = 21292128.

The previous prime is 42648721. The next prime is 42648769. The reversal of 42648728 is 82784624.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42648721) 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, 2150 + ... + 9482.

It is an arithmetic number, because the mean of its divisors is an integer number (5005455).

Almost surely, 2^42648728 is an apocalyptic number.

It is an amenable number.

42648728 is a deficient number, since it is larger than the sum of its proper divisors (37438552).

42648728 is a wasteful number, since it uses less digits than its factorization.

42648728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8066 (or 8062 counting only the distinct ones).

The product of its digits is 172032, while the sum is 41.

The square root of 42648728 is about 6530.5993599363. The cubic root of 42648728 is about 349.3832075649.

The spelling of 42648728 in words is "forty-two million, six hundred forty-eight thousand, seven hundred twenty-eight".