209250030 has 32 divisors (see below), whose sum is σ = 547855488. Its totient is φ = 50727200.

The previous prime is 209250029. The next prime is 209250037. The reversal of 209250030 is 30052902.

It is a junction number, because it is equal to n+sod(n) for n = 209249979 and 209250006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209250037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 316716 + ... + 317375.

It is an arithmetic number, because the mean of its divisors is an integer number (17120484).

Almost surely, 2^209250030 is an apocalyptic number.

209250030 is an abundant number, since it is smaller than the sum of its proper divisors (338605458).

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

209250030 is a wasteful number, since it uses less digits than its factorization.

209250030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634112.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 209250030 is about 14465.4771784411. The cubic root of 209250030 is about 593.6837698240.

The spelling of 209250030 in words is "two hundred nine million, two hundred fifty thousand, thirty".