8427438 has 12 divisors (see below), whose sum is σ = 18259488. Its totient is φ = 2809140.

The previous prime is 8427437. The next prime is 8427439. The reversal of 8427438 is 8347248.

It is an interprime number because it is at equal distance from previous prime (8427437) and next prime (8427439).

It is a super-2 number, since 2×8427438² = 142043422487688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8427437) 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 5 ways as a sum of consecutive naturals, for example, 234078 + ... + 234113.

It is an arithmetic number, because the mean of its divisors is an integer number (1521624).

Almost surely, 2^8427438 is an apocalyptic number.

8427438 is an abundant number, since it is smaller than the sum of its proper divisors (9832050).

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

8427438 is a wasteful number, since it uses less digits than its factorization.

8427438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468199 (or 468196 counting only the distinct ones).

The product of its digits is 43008, while the sum is 36.

The square root of 8427438 is about 2903.0049948286. The cubic root of 8427438 is about 203.5003632172.

The spelling of 8427438 in words is "eight million, four hundred twenty-seven thousand, four hundred thirty-eight".