210103400 has 48 divisors (see below), whose sum is σ = 526073100. Its totient is φ = 77575680.

The previous prime is 210103379. The next prime is 210103469. The reversal of 210103400 is 4301012.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 64032004 + 146071396 = 8002^2 + 12086^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37805 + ... + 43004.

Almost surely, 2^210103400 is an apocalyptic number.

210103400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210103400 is an abundant number, since it is smaller than the sum of its proper divisors (315969700).

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

210103400 is a wasteful number, since it uses less digits than its factorization.

210103400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80838 (or 80829 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 210103400 is about 14494.9439460800. The cubic root of 210103400 is about 594.4897350676.

Adding to 210103400 its reverse (4301012), we get a palindrome (214404412).

The spelling of 210103400 in words is "two hundred ten million, one hundred three thousand, four hundred".