405223230752 has 54 divisors (see below), whose sum is σ = 817080021513. Its totient is φ = 197824096512.

The previous prime is 405223230743. The next prime is 405223230757. The reversal of 405223230752 is 257032322504.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 265014921616 + 140208309136 = 514796^2 + 374444^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=450124.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (405223230757) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 154841348 + ... + 154843964.

Almost surely, 2^405223230752 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 405223230752

405223230752 is an abundant number, since it is smaller than the sum of its proper divisors (411856790761).

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

405223230752 is an frugal number, since it uses more digits than its factorization.

405223230752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5330 (or 2662 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 35.

The spelling of 405223230752 in words is "four hundred five billion, two hundred twenty-three million, two hundred thirty thousand, seven hundred fifty-two".