210745734 has 16 divisors (see below), whose sum is σ = 439817472. Its totient is φ = 67194248.

The previous prime is 210745669. The next prime is 210745793. The reversal of 210745734 is 437547012.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 210745695 and 210745704.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 763434 + ... + 763709.

It is an arithmetic number, because the mean of its divisors is an integer number (27488592).

Almost surely, 2^210745734 is an apocalyptic number.

210745734 is an abundant number, since it is smaller than the sum of its proper divisors (229071738).

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

210745734 is a wasteful number, since it uses less digits than its factorization.

210745734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1527171.

The product of its (nonzero) digits is 23520, while the sum is 33.

The square root of 210745734 is about 14517.0842113697. The cubic root of 210745734 is about 595.0949489507.

The spelling of 210745734 in words is "two hundred ten million, seven hundred forty-five thousand, seven hundred thirty-four".