100442328 has 64 divisors (see below), whose sum is σ = 287765760. Its totient is φ = 28619136.

The previous prime is 100442327. The next prime is 100442347. The reversal of 100442328 is 823244001.

It is a super-2 number, since 2×100442328² = 20177322508119168, which contains 22 as substring.

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

It is a zygodrome in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 100442298 and 100442307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100442327) 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, 91350 + ... + 92442.

It is an arithmetic number, because the mean of its divisors is an integer number (4496340).

Almost surely, 2^100442328 is an apocalyptic number.

It is an amenable number.

100442328 is an abundant number, since it is smaller than the sum of its proper divisors (187323432).

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

100442328 is a wasteful number, since it uses less digits than its factorization.

100442328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1656 (or 1652 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 100442328 is about 10022.0919971830. The cubic root of 100442328 is about 464.8422450180.

Adding to 100442328 its reverse (823244001), we get a palindrome (923686329).

The spelling of 100442328 in words is "one hundred million, four hundred forty-two thousand, three hundred twenty-eight".