454421220 has 192 divisors, whose sum is σ = 1487953152. Its totient is φ = 102400000.

The previous prime is 454421207. The next prime is 454421267. The reversal of 454421220 is 22124454.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1133020 + ... + 1133420.

It is an arithmetic number, because the mean of its divisors is an integer number (7749756).

Almost surely, 2^454421220 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 454421220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (743976576).

454421220 is an abundant number, since it is smaller than the sum of its proper divisors (1033531932).

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

454421220 is a wasteful number, since it uses less digits than its factorization.

454421220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542 (or 540 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 454421220 is about 21317.1578781037. The cubic root of 454421220 is about 768.8109042897.

Adding to 454421220 its reverse (22124454), we get a palindrome (476545674).

The spelling of 454421220 in words is "four hundred fifty-four million, four hundred twenty-one thousand, two hundred twenty".