451530432 has 84 divisors (see below), whose sum is σ = 1297157680. Its totient is φ = 150170112.

The previous prime is 451530427. The next prime is 451530451. The reversal of 451530432 is 234035154.

It is a junction number, because it is equal to n+sod(n) for n = 451530396 and 451530405.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 490869 + ... + 491787.

Almost surely, 2^451530432 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 451530432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (648578840).

451530432 is an abundant number, since it is smaller than the sum of its proper divisors (845627248).

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

451530432 is a wasteful number, since it uses less digits than its factorization.

451530432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1790 (or 1777 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 451530432 is about 21249.2454454270. The cubic root of 451530432 is about 767.1771786547.

Adding to 451530432 its reverse (234035154), we get a palindrome (685565586).

The spelling of 451530432 in words is "four hundred fifty-one million, five hundred thirty thousand, four hundred thirty-two".