100405400 has 48 divisors (see below), whose sum is σ = 247182840. Its totient is φ = 37798400.

The previous prime is 100405397. The next prime is 100405411. The reversal of 100405400 is 4504001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11366 + ... + 18165.

Almost surely, 2^100405400 is an apocalyptic number.

100405400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100405400 is an abundant number, since it is smaller than the sum of its proper divisors (146777440).

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

100405400 is a wasteful number, since it uses less digits than its factorization.

100405400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29564 (or 29555 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 100405400 is about 10020.2494978918. The cubic root of 100405400 is about 464.7852710348.

Adding to 100405400 its reverse (4504001), we get a palindrome (104909401).

The spelling of 100405400 in words is "one hundred million, four hundred five thousand, four hundred".