207916340 has 12 divisors (see below), whose sum is σ = 436624356. Its totient is φ = 83166528.

The previous prime is 207916333. The next prime is 207916351. The reversal of 207916340 is 43619702.

It can be written as a sum of positive squares in 2 ways, for example, as 156450064 + 51466276 = 12508^2 + 7174^2 .

It is a junction number, because it is equal to n+sod(n) for n = 207916297 and 207916306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5197889 + ... + 5197928.

It is an arithmetic number, because the mean of its divisors is an integer number (36385363).

Almost surely, 2^207916340 is an apocalyptic number.

207916340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

207916340 is an abundant number, since it is smaller than the sum of its proper divisors (228708016).

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

207916340 is a wasteful number, since it uses less digits than its factorization.

207916340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10395826 (or 10395824 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 207916340 is about 14419.3044215038. The cubic root of 207916340 is about 592.4197663556.

The spelling of 207916340 in words is "two hundred seven million, nine hundred sixteen thousand, three hundred forty".