8453420 has 72 divisors (see below), whose sum is σ = 20067264. Its totient is φ = 2979328.

The previous prime is 8453411. The next prime is 8453477. The reversal of 8453420 is 243548.

It is a self number, because there is not a number n which added to its sum of digits gives 8453420.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 179837 + ... + 179883.

It is an arithmetic number, because the mean of its divisors is an integer number (278712).

Almost surely, 2^8453420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8453420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10033632).

8453420 is an abundant number, since it is smaller than the sum of its proper divisors (11613844).

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

8453420 is a wasteful number, since it uses less digits than its factorization.

8453420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119 (or 94 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 8453420 is about 2907.4765691231. The cubic root of 8453420 is about 203.7092808839.

Adding to 8453420 its reverse (243548), we get a palindrome (8696968).

The spelling of 8453420 in words is "eight million, four hundred fifty-three thousand, four hundred twenty".