100011956 has 24 divisors (see below), whose sum is σ = 195592320. Its totient is φ = 44350400.

The previous prime is 100011943. The next prime is 100011959. The reversal of 100011956 is 659110001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100011959) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25916 + ... + 29523.

It is an arithmetic number, because the mean of its divisors is an integer number (8149680).

Almost surely, 2^100011956 is an apocalyptic number.

It is an amenable number.

100011956 is a deficient number, since it is larger than the sum of its proper divisors (95580364).

100011956 is a wasteful number, since it uses less digits than its factorization.

100011956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55495 (or 55493 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 23.

The square root of 100011956 is about 10000.5977821328. The cubic root of 100011956 is about 464.1773809028.

Adding to 100011956 its reverse (659110001), we get a palindrome (759121957).

The spelling of 100011956 in words is "one hundred million, eleven thousand, nine hundred fifty-six".