100643136 has 56 divisors (see below), whose sum is σ = 290498784. Its totient is φ = 30497280.

The previous prime is 100643119. The next prime is 100643141. The reversal of 100643136 is 631346001.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21715 + ... + 25938.

Almost surely, 2^100643136 is an apocalyptic number.

100643136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

100643136 is an abundant number, since it is smaller than the sum of its proper divisors (189855648).

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

100643136 is a wasteful number, since it uses less digits than its factorization.

100643136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47679 (or 47669 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 100643136 is about 10032.1052626057. The cubic root of 100643136 is about 465.1518153847.

Adding to 100643136 its reverse (631346001), we get a palindrome (731989137).

The spelling of 100643136 in words is "one hundred million, six hundred forty-three thousand, one hundred thirty-six".