100145320 has 32 divisors (see below), whose sum is σ = 245812320. Its totient is φ = 36416320.

The previous prime is 100145303. The next prime is 100145341. The reversal of 100145320 is 23541001.

It is a junction number, because it is equal to n+sod(n) for n = 100145294 and 100145303.

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, 113362 + ... + 114241.

It is an arithmetic number, because the mean of its divisors is an integer number (7681635).

Almost surely, 2^100145320 is an apocalyptic number.

100145320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100145320 is an abundant number, since it is smaller than the sum of its proper divisors (145667000).

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

100145320 is a wasteful number, since it uses less digits than its factorization.

100145320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227625 (or 227621 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 100145320 is about 10007.2633621785. The cubic root of 100145320 is about 464.3836131004.

Adding to 100145320 its reverse (23541001), we get a palindrome (123686321).

The spelling of 100145320 in words is "one hundred million, one hundred forty-five thousand, three hundred twenty".