82405854 has 12 divisors (see below), whose sum is σ = 178546056. Its totient is φ = 27468612.

The previous prime is 82405847. The next prime is 82405867. The reversal of 82405854 is 45850428.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

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, 2289034 + ... + 2289069.

It is an arithmetic number, because the mean of its divisors is an integer number (14878838).

Almost surely, 2^82405854 is an apocalyptic number.

82405854 is an abundant number, since it is smaller than the sum of its proper divisors (96140202).

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

82405854 is a wasteful number, since it uses less digits than its factorization.

82405854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4578111 (or 4578108 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 36.

The square root of 82405854 is about 9077.7670161775. The cubic root of 82405854 is about 435.1637275076.

The spelling of 82405854 in words is "eighty-two million, four hundred five thousand, eight hundred fifty-four".