100172136 has 32 divisors (see below), whose sum is σ = 251713440. Its totient is φ = 33219648.

The previous prime is 100172131. The next prime is 100172141. The reversal of 100172136 is 631271001.

It is an interprime number because it is at equal distance from previous prime (100172131) and next prime (100172141).

It is not an unprimeable number, because it can be changed into a prime (100172131) 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, 5866 + ... + 15321.

It is an arithmetic number, because the mean of its divisors is an integer number (7866045).

Almost surely, 2^100172136 is an apocalyptic number.

It is an amenable number.

100172136 is an abundant number, since it is smaller than the sum of its proper divisors (151541304).

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

100172136 is a wasteful number, since it uses less digits than its factorization.

100172136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21393 (or 21389 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 100172136 is about 10008.6030993341. The cubic root of 100172136 is about 464.4250588702.

It can be divided in two parts, 1001 and 72136, that added together give a palindrome (73137).

The spelling of 100172136 in words is "one hundred million, one hundred seventy-two thousand, one hundred thirty-six".