82135404 has 96 divisors (see below), whose sum is σ = 241472000. Its totient is φ = 23934528.

The previous prime is 82135397. The next prime is 82135409. The reversal of 82135404 is 40453128.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (82135409) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 25137 + ... + 28215.

Almost surely, 2^82135404 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 82135404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120736000).

82135404 is an abundant number, since it is smaller than the sum of its proper divisors (159336596).

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

82135404 is a wasteful number, since it uses less digits than its factorization.

82135404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3124 (or 3116 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 82135404 is about 9062.8584894613. The cubic root of 82135404 is about 434.6871472256.

The spelling of 82135404 in words is "eighty-two million, one hundred thirty-five thousand, four hundred four".