100213644 has 48 divisors (see below), whose sum is σ = 239016960. Its totient is φ = 32672640.

The previous prime is 100213643. The next prime is 100213651. The reversal of 100213644 is 446312001.

It is a self number, because there is not a number n which added to its sum of digits gives 100213644.

It is not an unprimeable number, because it can be changed into a prime (100213643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109549 + ... + 110459.

It is an arithmetic number, because the mean of its divisors is an integer number (4979520).

Almost surely, 2^100213644 is an apocalyptic number.

It is an amenable number.

100213644 is an abundant number, since it is smaller than the sum of its proper divisors (138803316).

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

100213644 is a wasteful number, since it uses less digits than its factorization.

100213644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110 (or 1108 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 100213644 is about 10010.6765006167. The cubic root of 100213644 is about 464.4891974424.

Adding to 100213644 its reverse (446312001), we get a palindrome (546525645).

The spelling of 100213644 in words is "one hundred million, two hundred thirteen thousand, six hundred forty-four".