8618420 has 12 divisors (see below), whose sum is σ = 18098724. Its totient is φ = 3447360.

The previous prime is 8618413. The next prime is 8618429. The reversal of 8618420 is 248168.

It can be written as a sum of positive squares in 2 ways, for example, as 3857296 + 4761124 = 1964^2 + 2182^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8618429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215441 + ... + 215480.

It is an arithmetic number, because the mean of its divisors is an integer number (1508227).

Almost surely, 2^8618420 is an apocalyptic number.

It is an amenable number.

8618420 is an abundant number, since it is smaller than the sum of its proper divisors (9480304).

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

8618420 is a wasteful number, since it uses less digits than its factorization.

8618420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430930 (or 430928 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 8618420 is about 2935.7145637817. The cubic root of 8618420 is about 205.0261319057.

The spelling of 8618420 in words is "eight million, six hundred eighteen thousand, four hundred twenty".