405412532220 has 96 divisors (see below), whose sum is σ = 1185891194880. Its totient is φ = 103362036480.

The previous prime is 405412532101. The next prime is 405412532227. The reversal of 405412532220 is 22235214504.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405412532227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1158655 + ... + 1467414.

It is an arithmetic number, because the mean of its divisors is an integer number (12353033280).

Almost surely, 2^405412532220 is an apocalyptic number.

It is an amenable number.

405412532220 is an abundant number, since it is smaller than the sum of its proper divisors (780478662660).

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

405412532220 is a wasteful number, since it uses less digits than its factorization.

405412532220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2626195 (or 2626193 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 405412532220 its reverse (22235214504), we get a palindrome (427647746724).

The spelling of 405412532220 in words is "four hundred five billion, four hundred twelve million, five hundred thirty-two thousand, two hundred twenty".