100345998 has 16 divisors (see below), whose sum is σ = 206116560. Its totient is φ = 32544576.

The previous prime is 100345997. The next prime is 100346021. The reversal of 100345998 is 899543001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100345997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 225783 + ... + 226226.

It is an arithmetic number, because the mean of its divisors is an integer number (12882285).

Almost surely, 2^100345998 is an apocalyptic number.

100345998 is an abundant number, since it is smaller than the sum of its proper divisors (105770562).

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

100345998 is a wasteful number, since it uses less digits than its factorization.

100345998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452051.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 100345998 is about 10017.2849615053. The cubic root of 100345998 is about 464.6935939564.

Adding to 100345998 its reverse (899543001), we get a palindrome (999888999).

The spelling of 100345998 in words is "one hundred million, three hundred forty-five thousand, nine hundred ninety-eight".