100390568 has 8 divisors (see below), whose sum is σ = 188232330. Its totient is φ = 50195280.

The previous prime is 100390541. The next prime is 100390573. The reversal of 100390568 is 865093001.

It can be written as a sum of positive squares in only one way, i.e., 97574884 + 2815684 = 9878^2 + 1678^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×100390568² = 20156532286725248, which contains 22 as substring.

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 as a sum of consecutive naturals, namely, 6274403 + ... + 6274418.

Almost surely, 2^100390568 is an apocalyptic number.

It is an amenable number.

100390568 is a deficient number, since it is larger than the sum of its proper divisors (87841762).

100390568 is a wasteful number, since it uses less digits than its factorization.

100390568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12548827 (or 12548823 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 100390568 is about 10019.5093692256. The cubic root of 100390568 is about 464.7623837047.

The spelling of 100390568 in words is "one hundred million, three hundred ninety thousand, five hundred sixty-eight".