403400012020 has 48 divisors (see below), whose sum is σ = 891781107840. Its totient is φ = 152857984896.

The previous prime is 403400011997. The next prime is 403400012027. The reversal of 403400012020 is 20210004304.

It is a super-2 number, since 2×403400012020² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 403400011985 and 403400012003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403400012027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11980929 + ... + 12014551.

It is an arithmetic number, because the mean of its divisors is an integer number (18578773080).

Almost surely, 2^403400012020 is an apocalyptic number.

It is an amenable number.

403400012020 is an abundant number, since it is smaller than the sum of its proper divisors (488381095820).

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

403400012020 is a wasteful number, since it uses less digits than its factorization.

403400012020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65224 (or 65222 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 403400012020 its reverse (20210004304), we get a palindrome (423610016324).

The spelling of 403400012020 in words is "four hundred three billion, four hundred million, twelve thousand, twenty".