42808388 has 12 divisors (see below), whose sum is σ = 85616832. Its totient is φ = 18346440.

The previous prime is 42808373. The next prime is 42808393. The reversal of 42808388 is 88380824.

42808388 is an admirable number.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 764408 + ... + 764463.

It is an arithmetic number, because the mean of its divisors is an integer number (7134736).

Almost surely, 2^42808388 is an apocalyptic number.

It is an amenable number.

42808388 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

42808388 is a wasteful number, since it uses less digits than its factorization.

42808388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1528882 (or 1528880 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 41.

The square root of 42808388 is about 6542.8119337178. The cubic root of 42808388 is about 349.8186489070.

The spelling of 42808388 in words is "forty-two million, eight hundred eight thousand, three hundred eighty-eight".