100432220 has 72 divisors (see below), whose sum is σ = 249928224. Its totient is φ = 33207552.

The previous prime is 100432217. The next prime is 100432223. The reversal of 100432220 is 22234001.

It is an interprime number because it is at equal distance from previous prime (100432217) and next prime (100432223).

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 100432195 and 100432204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100432223) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 117314 + ... + 118166.

Almost surely, 2^100432220 is an apocalyptic number.

100432220 is a gapful number since it is divisible by the number (10) 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 100432220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124964112).

100432220 is an abundant number, since it is smaller than the sum of its proper divisors (149496004).

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

100432220 is a wasteful number, since it uses less digits than its factorization.

100432220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 927 (or 896 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 100432220 is about 10021.5876985635. The cubic root of 100432220 is about 464.8266513829.

Adding to 100432220 its reverse (22234001), we get a palindrome (122666221).

The spelling of 100432220 in words is "one hundred million, four hundred thirty-two thousand, two hundred twenty".