82881954 has 24 divisors (see below), whose sum is σ = 186229680. Its totient is φ = 27627156.

The previous prime is 82881943. The next prime is 82881959. The reversal of 82881954 is 45918828.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (82881959) 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 11 ways as a sum of consecutive naturals, for example, 84784 + ... + 85755.

It is an arithmetic number, because the mean of its divisors is an integer number (7759570).

Almost surely, 2^82881954 is an apocalyptic number.

82881954 is an abundant number, since it is smaller than the sum of its proper divisors (103347726).

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

82881954 is a wasteful number, since it uses less digits than its factorization.

82881954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170556 (or 170544 counting only the distinct ones).

The product of its digits is 184320, while the sum is 45.

The square root of 82881954 is about 9103.9526580491. The cubic root of 82881954 is about 436.0001718429. Note that the first 3 decimals are identical.

The spelling of 82881954 in words is "eighty-two million, eight hundred eighty-one thousand, nine hundred fifty-four".