82209888 has 36 divisors (see below), whose sum is σ = 233785188. Its totient is φ = 27403200.

The previous prime is 82209877. The next prime is 82209929. The reversal of 82209888 is 88890228.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 142438 + ... + 143013.

It is an arithmetic number, because the mean of its divisors is an integer number (6494033).

Almost surely, 2^82209888 is an apocalyptic number.

It is an amenable number.

82209888 is an abundant number, since it is smaller than the sum of its proper divisors (151575300).

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

82209888 is a wasteful number, since it uses less digits than its factorization.

82209888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285467 (or 285456 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 45.

The square root of 82209888 is about 9066.9668577755. The cubic root of 82209888 is about 434.8185053400.

The spelling of 82209888 in words is "eighty-two million, two hundred nine thousand, eight hundred eighty-eight".