209334730 has 64 divisors (see below), whose sum is σ = 433859328. Its totient is φ = 71976960.

The previous prime is 209334709. The next prime is 209334739. The reversal of 209334730 is 37433902.

209334730 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 209334692 and 209334701.

It is not an unprimeable number, because it can be changed into a prime (209334739) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 244984 + ... + 245836.

It is an arithmetic number, because the mean of its divisors is an integer number (6779052).

Almost surely, 2^209334730 is an apocalyptic number.

209334730 is an abundant number, since it is smaller than the sum of its proper divisors (224524598).

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

209334730 is a wasteful number, since it uses less digits than its factorization.

209334730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 991.

The product of its (nonzero) digits is 13608, while the sum is 31.

The square root of 209334730 is about 14468.4045423122. The cubic root of 209334730 is about 593.7638625757.

The spelling of 209334730 in words is "two hundred nine million, three hundred thirty-four thousand, seven hundred thirty".