451003720 has 16 divisors (see below), whose sum is σ = 1014758460. Its totient is φ = 180401472.

The previous prime is 451003699. The next prime is 451003739. The reversal of 451003720 is 27300154.

It can be written as a sum of positive squares in 2 ways, for example, as 450373284 + 630436 = 21222^2 + 794^2 .

It is a junction number, because it is equal to n+sod(n) for n = 451003691 and 451003700.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5637507 + ... + 5637586.

Almost surely, 2^451003720 is an apocalyptic number.

451003720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

451003720 is an abundant number, since it is smaller than the sum of its proper divisors (563754740).

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

451003720 is a wasteful number, since it uses less digits than its factorization.

451003720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11275104 (or 11275100 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 451003720 is about 21236.8481653940. The cubic root of 451003720 is about 766.8787575368.

Adding to 451003720 its reverse (27300154), we get a palindrome (478303874).

The spelling of 451003720 in words is "four hundred fifty-one million, three thousand, seven hundred twenty".