207138306 has 32 divisors (see below), whose sum is σ = 424101888. Its totient is φ = 67415760.

The previous prime is 207138301. The next prime is 207138331. The reversal of 207138306 is 603831702.

It is not an unprimeable number, because it can be changed into a prime (207138301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 194331 + ... + 195393.

It is an arithmetic number, because the mean of its divisors is an integer number (13253184).

Almost surely, 2^207138306 is an apocalyptic number.

207138306 is an abundant number, since it is smaller than the sum of its proper divisors (216963582).

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

207138306 is a wasteful number, since it uses less digits than its factorization.

207138306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1806.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 207138306 is about 14392.3002331108. The cubic root of 207138306 is about 591.6798872754.

The spelling of 207138306 in words is "two hundred seven million, one hundred thirty-eight thousand, three hundred six".