42808660 has 48 divisors (see below), whose sum is σ = 92307600. Its totient is φ = 16671744.

The previous prime is 42808657. The next prime is 42808673. The reversal of 42808660 is 6680824.

It can be written as a sum of positive squares in 8 ways, for example, as 1669264 + 41139396 = 1292^2 + 6414^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 159006 + ... + 159274.

It is an arithmetic number, because the mean of its divisors is an integer number (1923075).

Almost surely, 2^42808660 is an apocalyptic number.

It is an amenable number.

42808660 is an abundant number, since it is smaller than the sum of its proper divisors (49498940).

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

42808660 is a wasteful number, since it uses less digits than its factorization.

42808660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460 (or 458 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 42808660 is about 6542.8327198546. The cubic root of 42808660 is about 349.8193898091.

The spelling of 42808660 in words is "forty-two million, eight hundred eight thousand, six hundred sixty".