209230070 has 32 divisors (see below), whose sum is σ = 445262400. Its totient is φ = 69261696.

The previous prime is 209230069. The next prime is 209230081. The reversal of 209230070 is 70032902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49505 + ... + 53564.

It is an arithmetic number, because the mean of its divisors is an integer number (13914450).

Almost surely, 2^209230070 is an apocalyptic number.

209230070 is an abundant number, since it is smaller than the sum of its proper divisors (236032330).

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

209230070 is a wasteful number, since it uses less digits than its factorization.

209230070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103112.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 209230070 is about 14464.7872435097. The cubic root of 209230070 is about 593.6648923997.

Adding to 209230070 its reverse (70032902), we get a palindrome (279262972).

The spelling of 209230070 in words is "two hundred nine million, two hundred thirty thousand, seventy".