8631420 has 48 divisors (see below), whose sum is σ = 27621888. Its totient is φ = 1972800.

The previous prime is 8631401. The next prime is 8631451. The reversal of 8631420 is 241368.

It is a happy number.

8631420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×8631420² = 149002822432800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9856 + ... + 10695.

It is an arithmetic number, because the mean of its divisors is an integer number (575456).

Almost surely, 2^8631420 is an apocalyptic number.

It is an amenable number.

8631420 is an abundant number, since it is smaller than the sum of its proper divisors (18990468).

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

8631420 is a wasteful number, since it uses less digits than its factorization.

8631420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20570 (or 20568 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 8631420 is about 2937.9278411833. The cubic root of 8631420 is about 205.1291670601.

Adding to 8631420 its reverse (241368), we get a palindrome (8872788).

The spelling of 8631420 in words is "eight million, six hundred thirty-one thousand, four hundred twenty".