451152020 has 48 divisors (see below), whose sum is σ = 1036215936. Its totient is φ = 163632000.

The previous prime is 451152019. The next prime is 451152029. The reversal of 451152020 is 20251154.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 451151983 and 451152001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451152029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90185 + ... + 95055.

It is an arithmetic number, because the mean of its divisors is an integer number (21587832).

Almost surely, 2^451152020 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 451152020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (518107968).

451152020 is an abundant number, since it is smaller than the sum of its proper divisors (585063916).

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

451152020 is a wasteful number, since it uses less digits than its factorization.

451152020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5312 (or 5310 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 451152020 is about 21240.3394511481. The cubic root of 451152020 is about 766.9628038920.

The spelling of 451152020 in words is "four hundred fifty-one million, one hundred fifty-two thousand, twenty".