106215808 has 16 divisors (see below), whose sum is σ = 211602060. Its totient is φ = 53107840.

The previous prime is 106215793. The next prime is 106215821. The reversal of 106215808 is 808512601.

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-2 number, since 2×106215808² = 22563595738185728, which contains 22 as substring.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 106215808.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 414778 + ... + 415033.

Almost surely, 2^106215808 is an apocalyptic number.

It is an amenable number.

106215808 is a deficient number, since it is larger than the sum of its proper divisors (105386252).

106215808 is an frugal number, since it uses more digits than its factorization.

106215808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 829825 (or 829813 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 31.

The square root of 106215808 is about 10306.1053749707. The cubic root of 106215808 is about 473.5833068745.

The spelling of 106215808 in words is "one hundred six million, two hundred fifteen thousand, eight hundred eight".