207161136 has 120 divisors (see below), whose sum is σ = 713600160. Its totient is φ = 54632448.

The previous prime is 207161131. The next prime is 207161177. The reversal of 207161136 is 631161702.

It is not an unprimeable number, because it can be changed into a prime (207161131) 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 23 ways as a sum of consecutive naturals, for example, 5200 + ... + 21008.

It is an arithmetic number, because the mean of its divisors is an integer number (5946668).

Almost surely, 2^207161136 is an apocalyptic number.

207161136 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 207161136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (356800080).

207161136 is an abundant number, since it is smaller than the sum of its proper divisors (506439024).

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

207161136 is a wasteful number, since it uses less digits than its factorization.

207161136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15843 (or 15834 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 207161136 is about 14393.0933436840. The cubic root of 207161136 is about 591.7016240493.

The spelling of 207161136 in words is "two hundred seven million, one hundred sixty-one thousand, one hundred thirty-six".