84581426 has 32 divisors (see below), whose sum is σ = 142197120. Its totient is φ = 37497600.

The previous prime is 84581411. The next prime is 84581449. The reversal of 84581426 is 62418548.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a self number, because there is not a number n which added to its sum of digits gives 84581426.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 200696 + ... + 201116.

It is an arithmetic number, because the mean of its divisors is an integer number (4443660).

Almost surely, 2^84581426 is an apocalyptic number.

84581426 is a deficient number, since it is larger than the sum of its proper divisors (57615694).

84581426 is a wasteful number, since it uses less digits than its factorization.

84581426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770.

The product of its digits is 61440, while the sum is 38.

The square root of 84581426 is about 9196.8160794919. The cubic root of 84581426 is about 438.9600543421.

The spelling of 84581426 in words is "eighty-four million, five hundred eighty-one thousand, four hundred twenty-six".