405603380 has 216 divisors, whose sum is σ = 1121541120. Its totient is φ = 122653440.

The previous prime is 405603353. The next prime is 405603383. The reversal of 405603380 is 83306504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405603383) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 5134181 + ... + 5134259.

It is an arithmetic number, because the mean of its divisors is an integer number (5192320).

Almost surely, 2^405603380 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 405603380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (560770560).

405603380 is an abundant number, since it is smaller than the sum of its proper divisors (715937740).

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

405603380 is a wasteful number, since it uses less digits than its factorization.

405603380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 405603380 is about 20139.5973147429. The cubic root of 405603380 is about 740.2308629576.

Adding to 405603380 its reverse (83306504), we get a palindrome (488909884).

The spelling of 405603380 in words is "four hundred five million, six hundred three thousand, three hundred eighty".