207742086 has 96 divisors (see below), whose sum is σ = 492467040. Its totient is φ = 63078912.

The previous prime is 207742079. The next prime is 207742103. The reversal of 207742086 is 680247702.

It is a self number, because there is not a number n which added to its sum of digits gives 207742086.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1323120 + ... + 1323276.

It is an arithmetic number, because the mean of its divisors is an integer number (5129865).

Almost surely, 2^207742086 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 207742086, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (246233520).

207742086 is an abundant number, since it is smaller than the sum of its proper divisors (284724954).

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

207742086 is a wasteful number, since it uses less digits than its factorization.

207742086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310 (or 307 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 207742086 is about 14413.2607691667. The cubic root of 207742086 is about 592.2542184133.

Adding to 207742086 its reverse (680247702), we get a palindrome (887989788).

The spelling of 207742086 in words is "two hundred seven million, seven hundred forty-two thousand, eighty-six".