82261188 has 36 divisors (see below), whose sum is σ = 209537328. Its totient is φ = 27209520.

The previous prime is 82261121. The next prime is 82261213. The reversal of 82261188 is 88116228.

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

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4006 + ... + 13437.

Almost surely, 2^82261188 is an apocalyptic number.

It is an amenable number.

82261188 is an abundant number, since it is smaller than the sum of its proper divisors (127276140).

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

82261188 is a wasteful number, since it uses less digits than its factorization.

82261188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17584 (or 17579 counting only the distinct ones).

The product of its digits is 12288, while the sum is 36.

The square root of 82261188 is about 9069.7953670411. The cubic root of 82261188 is about 434.9089305986.

The spelling of 82261188 in words is "eighty-two million, two hundred sixty-one thousand, one hundred eighty-eight".