405500214 has 64 divisors (see below), whose sum is σ = 973324800. Its totient is φ = 110170368.

The previous prime is 405500203. The next prime is 405500219. The reversal of 405500214 is 412005504.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405500219) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 79122 + ... + 84090.

It is an arithmetic number, because the mean of its divisors is an integer number (15208200).

Almost surely, 2^405500214 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 405500214, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (486662400).

405500214 is an abundant number, since it is smaller than the sum of its proper divisors (567824586).

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

405500214 is a wasteful number, since it uses less digits than its factorization.

405500214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5077.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 405500214 is about 20137.0358791953. The cubic root of 405500214 is about 740.1680979212.

Adding to 405500214 its reverse (412005504), we get a palindrome (817505718).

The spelling of 405500214 in words is "four hundred five million, five hundred thousand, two hundred fourteen".