451212730 has 16 divisors (see below), whose sum is σ = 825498504. Its totient is φ = 177526080.

The previous prime is 451212709. The next prime is 451212733. The reversal of 451212730 is 37212154.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 276523641 + 174689089 = 16629^2 + 13217^2 .

It is a junction number, because it is equal to n+sod(n) for n = 451212695 and 451212704.

It is not an unprimeable number, because it can be changed into a prime (451212733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 369237 + ... + 370456.

Almost surely, 2^451212730 is an apocalyptic number.

451212730 is a deficient number, since it is larger than the sum of its proper divisors (374285774).

451212730 is a wasteful number, since it uses less digits than its factorization.

451212730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 739761.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 451212730 is about 21241.7685233598. The cubic root of 451212730 is about 766.9972048783.

Adding to 451212730 its reverse (37212154), we get a palindrome (488424884).

The spelling of 451212730 in words is "four hundred fifty-one million, two hundred twelve thousand, seven hundred thirty".