100621136 has 160 divisors (see below), whose sum is σ = 262268928. Its totient is φ = 36241920.

The previous prime is 100621117. The next prime is 100621177. The reversal of 100621136 is 631126001.

It is a super-2 number, since 2×100621136² = 20249226019860992, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1501775 + ... + 1501841.

Almost surely, 2^100621136 is an apocalyptic number.

100621136 is a gapful number since it is divisible by the number (16) 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 100621136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131134464).

100621136 is an abundant number, since it is smaller than the sum of its proper divisors (161647792).

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

100621136 is a wasteful number, since it uses less digits than its factorization.

100621136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169 (or 163 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 100621136 is about 10031.0087229550. The cubic root of 100621136 is about 465.1179197607.

Adding to 100621136 its reverse (631126001), we get a palindrome (731747137).

The spelling of 100621136 in words is "one hundred million, six hundred twenty-one thousand, one hundred thirty-six".