8450420 has 48 divisors (see below), whose sum is σ = 19668096. Its totient is φ = 3024000.

The previous prime is 8450419. The next prime is 8450423. The reversal of 8450420 is 240548.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8450423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15350 + ... + 15890.

It is an arithmetic number, because the mean of its divisors is an integer number (409752).

Almost surely, 2^8450420 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 8450420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9834048).

8450420 is an abundant number, since it is smaller than the sum of its proper divisors (11217676).

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

8450420 is a wasteful number, since it uses less digits than its factorization.

8450420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632 (or 630 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 8450420 is about 2906.9606120483. The cubic root of 8450420 is about 203.6851801787.

Adding to 8450420 its reverse (240548), we get a palindrome (8690968).

The spelling of 8450420 in words is "eight million, four hundred fifty thousand, four hundred twenty".