103205400 has 48 divisors (see below), whose sum is σ = 319938600. Its totient is φ = 27521280.

The previous prime is 103205383. The next prime is 103205413. The reversal of 103205400 is 4502301.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 103205400.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85405 + ... + 86604.

Almost surely, 2^103205400 is an apocalyptic number.

103205400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

103205400 is an abundant number, since it is smaller than the sum of its proper divisors (216733200).

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

103205400 is a wasteful number, since it uses less digits than its factorization.

103205400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172028 (or 172019 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 103205400 is about 10159.0058568740. The cubic root of 103205400 is about 469.0662008772.

Adding to 103205400 its reverse (4502301), we get a palindrome (107707701).

The spelling of 103205400 in words is "one hundred three million, two hundred five thousand, four hundred".