100390608 has 30 divisors (see below), whose sum is σ = 280954674. Its totient is φ = 33463488.

The previous prime is 100390597. The next prime is 100390621. The reversal of 100390608 is 806093001.

It can be written as a sum of positive squares in only one way, i.e., 60093504 + 40297104 = 7752^2 + 6348^2 .

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 348435 + ... + 348722.

Almost surely, 2^100390608 is an apocalyptic number.

100390608 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

100390608 is an abundant number, since it is smaller than the sum of its proper divisors (180564066).

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

100390608 is a wasteful number, since it uses less digits than its factorization.

100390608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697171 (or 697162 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 100390608 is about 10019.5113653311. The cubic root of 100390608 is about 464.7624454319.

The spelling of 100390608 in words is "one hundred million, three hundred ninety thousand, six hundred eight".