100434220 has 24 divisors (see below), whose sum is σ = 211284864. Its totient is φ = 40102656.

The previous prime is 100434211. The next prime is 100434223. The reversal of 100434220 is 22434001.

It is a junction number, because it is equal to n+sod(n) for n = 100434194 and 100434203.

It is not an unprimeable number, because it can be changed into a prime (100434223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8004 + ... + 16276.

It is an arithmetic number, because the mean of its divisors is an integer number (8803536).

Almost surely, 2^100434220 is an apocalyptic number.

100434220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100434220 is an abundant number, since it is smaller than the sum of its proper divisors (110850644).

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

100434220 is a wasteful number, since it uses less digits than its factorization.

100434220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8889 (or 8887 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 100434220 is about 10021.6874826548. The cubic root of 100434220 is about 464.8297368706.

Adding to 100434220 its reverse (22434001), we get a palindrome (122868221).

The spelling of 100434220 in words is "one hundred million, four hundred thirty-four thousand, two hundred twenty".