42328656 has 140 divisors (see below), whose sum is σ = 130110720. Its totient is φ = 13296960.

The previous prime is 42328651. The next prime is 42328721. The reversal of 42328656 is 65682324.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 42328656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42328651) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 221521 + ... + 221711.

Almost surely, 2^42328656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42328656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65055360).

42328656 is an abundant number, since it is smaller than the sum of its proper divisors (87782064).

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

42328656 is a wasteful number, since it uses less digits than its factorization.

42328656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236 (or 215 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 42328656 is about 6506.0476481501. The cubic root of 42328656 is about 348.5069899183.

The spelling of 42328656 in words is "forty-two million, three hundred twenty-eight thousand, six hundred fifty-six".