100890808 has 8 divisors (see below), whose sum is σ = 189170280. Its totient is φ = 50445400.

The previous prime is 100890781. The next prime is 100890809. The reversal of 100890808 is 808098001.

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

It is a super-4 number, since 4×100890808⁴ (a number of 33 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100890809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6305668 + ... + 6305683.

It is an arithmetic number, because the mean of its divisors is an integer number (23646285).

Almost surely, 2^100890808 is an apocalyptic number.

It is an amenable number.

100890808 is a deficient number, since it is larger than the sum of its proper divisors (88279472).

100890808 is a wasteful number, since it uses less digits than its factorization.

100890808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12611357 (or 12611353 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 34.

The square root of 100890808 is about 10044.4416470006. The cubic root of 100890808 is about 465.5330657826.

The spelling of 100890808 in words is "one hundred million, eight hundred ninety thousand, eight hundred eight".