85815426 has 8 divisors (see below), whose sum is σ = 171630864. Its totient is φ = 28605140.

The previous prime is 85815421. The next prime is 85815449. The reversal of 85815426 is 62451858.

It is a sphenic number, since it is the product of 3 distinct primes.

85815426 is an admirable number.

It is a super-2 number, since 2×85815426² = 14728574679122952, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (85815421) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 7151280 + ... + 7151291.

It is an arithmetic number, because the mean of its divisors is an integer number (21453858).

Almost surely, 2^85815426 is an apocalyptic number.

85815426 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

85815426 is a wasteful number, since it uses less digits than its factorization.

85815426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14302576.

The product of its digits is 76800, while the sum is 39.

The square root of 85815426 is about 9263.6615870832. The cubic root of 85815426 is about 441.0844907813.

The spelling of 85815426 in words is "eighty-five million, eight hundred fifteen thousand, four hundred twenty-six".