100405382 has 32 divisors (see below), whose sum is σ = 189181440. Its totient is φ = 38825280.

The previous prime is 100405381. The next prime is 100405397. The reversal of 100405382 is 283504001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100405381) 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, 18719 + ... + 23477.

It is an arithmetic number, because the mean of its divisors is an integer number (5911920).

Almost surely, 2^100405382 is an apocalyptic number.

100405382 is a deficient number, since it is larger than the sum of its proper divisors (88776058).

100405382 is a wasteful number, since it uses less digits than its factorization.

100405382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4916.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 100405382 is about 10020.2485997105. The cubic root of 100405382 is about 464.7852432603.

Adding to 100405382 its reverse (283504001), we get a palindrome (383909383).

The spelling of 100405382 in words is "one hundred million, four hundred five thousand, three hundred eighty-two".