452021100 has 72 divisors (see below), whose sum is σ = 1332570960. Its totient is φ = 118260480.

The previous prime is 452021081. The next prime is 452021113. The reversal of 452021100 is 1120254.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 452021100.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1686 + ... + 30114.

It is an arithmetic number, because the mean of its divisors is an integer number (18507930).

Almost surely, 2^452021100 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 452021100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (666285480).

452021100 is an abundant number, since it is smaller than the sum of its proper divisors (880549860).

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

452021100 is a wasteful number, since it uses less digits than its factorization.

452021100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28499 (or 28492 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 452021100 is about 21260.7878499363. The cubic root of 452021100 is about 767.4549694709.

Adding to 452021100 its reverse (1120254), we get a palindrome (453141354).

The spelling of 452021100 in words is "four hundred fifty-two million, twenty-one thousand, one hundred".