210013434 has 12 divisors (see below), whose sum is σ = 455029146. Its totient is φ = 70004472.

The previous prime is 210013421. The next prime is 210013487. The reversal of 210013434 is 434310012.

It can be written as a sum of positive squares in only one way, i.e., 194686209 + 15327225 = 13953^2 + 3915^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 11667413 = 210013434 / (2 + 1 + 0 + 0 + 1 + 3 + 4 + 3 + 4).

It is a Curzon 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 5 ways as a sum of consecutive naturals, for example, 5833689 + ... + 5833724.

Almost surely, 2^210013434 is an apocalyptic number.

210013434 is an abundant number, since it is smaller than the sum of its proper divisors (245015712).

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

210013434 is a wasteful number, since it uses less digits than its factorization.

210013434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11667421 (or 11667418 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 210013434 is about 14491.8402558129. The cubic root of 210013434 is about 594.4048697120.

Adding to 210013434 its reverse (434310012), we get a palindrome (644323446).

The spelling of 210013434 in words is "two hundred ten million, thirteen thousand, four hundred thirty-four".