403212020 has 12 divisors (see below), whose sum is σ = 846745284. Its totient is φ = 161284800.

The previous prime is 403211993. The next prime is 403212031. The reversal of 403212020 is 20212304.

It can be written as a sum of positive squares in 2 ways, for example, as 295633636 + 107578384 = 17194^2 + 10372^2 .

It is a junction number, because it is equal to n+sod(n) for n = 403211986 and 403212004.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 10080281 + ... + 10080320.

It is an arithmetic number, because the mean of its divisors is an integer number (70562107).

Almost surely, 2^403212020 is an apocalyptic number.

It is an amenable number.

403212020 is an abundant number, since it is smaller than the sum of its proper divisors (443533264).

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

403212020 is a wasteful number, since it uses less digits than its factorization.

403212020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20160610 (or 20160608 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 403212020 is about 20080.1399397514. The cubic root of 403212020 is about 738.7732413480.

Adding to 403212020 its reverse (20212304), we get a palindrome (423424324).

The spelling of 403212020 in words is "four hundred three million, two hundred twelve thousand, twenty".