82090554 has 64 divisors (see below), whose sum is σ = 203212800. Its totient is φ = 21528000.

The previous prime is 82090553. The next prime is 82090579. The reversal of 82090554 is 45509028.

It is not an unprimeable number, because it can be changed into a prime (82090553) 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, 136747 + ... + 137345.

It is an arithmetic number, because the mean of its divisors is an integer number (3175200).

Almost surely, 2^82090554 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 82090554, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101606400).

82090554 is an abundant number, since it is smaller than the sum of its proper divisors (121122246).

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

82090554 is a wasteful number, since it uses less digits than its factorization.

82090554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 875.

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 82090554 is about 9060.3837667066. The cubic root of 82090554 is about 434.6080125804.

The spelling of 82090554 in words is "eighty-two million, ninety thousand, five hundred fifty-four".