452321128 has 64 divisors (see below), whose sum is σ = 1035048960. Its totient is φ = 181089216.

The previous prime is 452321119. The next prime is 452321141. The reversal of 452321128 is 821123254.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 452321096 and 452321105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51301 + ... + 59467.

It is an arithmetic number, because the mean of its divisors is an integer number (16172640).

Almost surely, 2^452321128 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 452321128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (517524480).

452321128 is an abundant number, since it is smaller than the sum of its proper divisors (582727832).

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

452321128 is a wasteful number, since it uses less digits than its factorization.

452321128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8246 (or 8242 counting only the distinct ones).

The product of its digits is 3840, while the sum is 28.

The square root of 452321128 is about 21267.8425798199. The cubic root of 452321128 is about 767.6247307600.

It can be divided in two parts, 45232 and 1128, that added together give a triangular number (46360 = T₃₀₄).

The spelling of 452321128 in words is "four hundred fifty-two million, three hundred twenty-one thousand, one hundred twenty-eight".