8425638 has 24 divisors (see below), whose sum is σ = 19660368. Its totient is φ = 2592432.

The previous prime is 8425621. The next prime is 8425657. The reversal of 8425638 is 8365248.

It is a d-powerful number, because it can be written as 8 + 4⁶ + 2²³ + 5³ + 6 + 3³ + 8⁵ .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17770 + ... + 18237.

It is an arithmetic number, because the mean of its divisors is an integer number (819182).

Almost surely, 2^8425638 is an apocalyptic number.

8425638 is an abundant number, since it is smaller than the sum of its proper divisors (11234730).

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

8425638 is a wasteful number, since it uses less digits than its factorization.

8425638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36028 (or 36025 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 8425638 is about 2902.6949546930. The cubic root of 8425638 is about 203.4858737707.

The spelling of 8425638 in words is "eight million, four hundred twenty-five thousand, six hundred thirty-eight".