451220430 has 32 divisors (see below), whose sum is σ = 1087801344. Its totient is φ = 119784096.

The previous prime is 451220369. The next prime is 451220437. The reversal of 451220430 is 34022154.

It is a junction number, because it is equal to n+sod(n) for n = 451220397 and 451220406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451220437) 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, 27034 + ... + 40413.

It is an arithmetic number, because the mean of its divisors is an integer number (33993792).

Almost surely, 2^451220430 is an apocalyptic number.

451220430 is an abundant number, since it is smaller than the sum of its proper divisors (636580914).

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

451220430 is a wasteful number, since it uses less digits than its factorization.

451220430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67680.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 451220430 is about 21241.9497692655. The cubic root of 451220430 is about 767.0015678203.

Adding to 451220430 its reverse (34022154), we get a palindrome (485242584).

It can be divided in two parts, 4512 and 20430, that added together give a palindrome (24942).

The spelling of 451220430 in words is "four hundred fifty-one million, two hundred twenty thousand, four hundred thirty".