207856940 has 12 divisors (see below), whose sum is σ = 436499616. Its totient is φ = 83142768.

The previous prime is 207856939. The next prime is 207856993. The reversal of 207856940 is 49658702.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

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 3 ways as a sum of consecutive naturals, for example, 5196404 + ... + 5196443.

It is an arithmetic number, because the mean of its divisors is an integer number (36374968).

Almost surely, 2^207856940 is an apocalyptic number.

207856940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

207856940 is an abundant number, since it is smaller than the sum of its proper divisors (228642676).

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

207856940 is a wasteful number, since it uses less digits than its factorization.

207856940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10392856 (or 10392854 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 207856940 is about 14417.2445356247. The cubic root of 207856940 is about 592.3633444861.

The spelling of 207856940 in words is "two hundred seven million, eight hundred fifty-six thousand, nine hundred forty".