42808824 has 144 divisors (see below), whose sum is σ = 128976120. Its totient is φ = 13296960.

The previous prime is 42808823. The next prime is 42808841. The reversal of 42808824 is 42880824.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42808823) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 701754 + ... + 701814.

Almost surely, 2^42808824 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 42808824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64488060).

42808824 is an abundant number, since it is smaller than the sum of its proper divisors (86167296).

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

42808824 is a wasteful number, since it uses less digits than its factorization.

42808824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120 (or 85 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 36.

The square root of 42808824 is about 6542.8452526405. The cubic root of 42808824 is about 349.8198365280.

The spelling of 42808824 in words is "forty-two million, eight hundred eight thousand, eight hundred twenty-four".