207238820 has 24 divisors (see below), whose sum is σ = 437488128. Its totient is φ = 82460000.

The previous prime is 207238819. The next prime is 207238907. The reversal of 207238820 is 28832702.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23306 + ... + 30945.

It is an arithmetic number, because the mean of its divisors is an integer number (18228672).

Almost surely, 2^207238820 is an apocalyptic number.

207238820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

207238820 is an abundant number, since it is smaller than the sum of its proper divisors (230249308).

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

207238820 is a wasteful number, since it uses less digits than its factorization.

207238820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54451 (or 54449 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 207238820 is about 14395.7917462014. The cubic root of 207238820 is about 591.7755761516.

The spelling of 207238820 in words is "two hundred seven million, two hundred thirty-eight thousand, eight hundred twenty".