451300020 has 96 divisors (see below), whose sum is σ = 1396217088. Its totient is φ = 108337152.

The previous prime is 451300019. The next prime is 451300049. The reversal of 451300020 is 20003154.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent 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, 13842 + ... + 33078.

It is an arithmetic number, because the mean of its divisors is an integer number (14543928).

Almost surely, 2^451300020 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 451300020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (698108544).

451300020 is an abundant number, since it is smaller than the sum of its proper divisors (944917068).

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

451300020 is a wasteful number, since it uses less digits than its factorization.

451300020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19289 (or 19287 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 451300020 is about 21243.8231022573. The cubic root of 451300020 is about 767.0466618674.

Adding to 451300020 its reverse (20003154), we get a palindrome (471303174).

The spelling of 451300020 in words is "four hundred fifty-one million, three hundred thousand, twenty".