451044420 has 96 divisors (see below), whose sum is σ = 1372385280. Its totient is φ = 110263680.

The previous prime is 451044413. The next prime is 451044449. The reversal of 451044420 is 24440154.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28959 + ... + 41721.

It is an arithmetic number, because the mean of its divisors is an integer number (14295680).

Almost surely, 2^451044420 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 451044420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (686192640).

451044420 is an abundant number, since it is smaller than the sum of its proper divisors (921340860).

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

451044420 is a wasteful number, since it uses less digits than its factorization.

451044420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12825 (or 12823 counting only the distinct ones).

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

The square root of 451044420 is about 21237.8063838994. The cubic root of 451044420 is about 766.9018253632.

Adding to 451044420 its reverse (24440154), we get a palindrome (475484574).

The spelling of 451044420 in words is "four hundred fifty-one million, forty-four thousand, four hundred twenty".