8427420 has 36 divisors (see below), whose sum is σ = 25563720. Its totient is φ = 2247264.

The previous prime is 8427413. The next prime is 8427437. The reversal of 8427420 is 247248.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23230 + ... + 23589.

Almost surely, 2^8427420 is an apocalyptic number.

It is an amenable number.

8427420 is an abundant number, since it is smaller than the sum of its proper divisors (17136300).

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

8427420 is a wasteful number, since it uses less digits than its factorization.

8427420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46834 (or 46829 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 27.

The square root of 8427420 is about 2903.0018945912. The cubic root of 8427420 is about 203.5002183329.

The spelling of 8427420 in words is "eight million, four hundred twenty-seven thousand, four hundred twenty".