106405188 has 12 divisors (see below), whose sum is σ = 248278800. Its totient is φ = 35468392.

The previous prime is 106405183. The next prime is 106405213. The reversal of 106405188 is 881504601.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×106405188² = 22644128066630688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (106405183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4433538 + ... + 4433561.

It is an arithmetic number, because the mean of its divisors is an integer number (20689900).

Almost surely, 2^106405188 is an apocalyptic number.

It is an amenable number.

106405188 is an abundant number, since it is smaller than the sum of its proper divisors (141873612).

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

106405188 is a wasteful number, since it uses less digits than its factorization.

106405188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8867106 (or 8867104 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 33.

The square root of 106405188 is about 10315.2890410303. The cubic root of 106405188 is about 473.8646019653.

Adding to 106405188 its reverse (881504601), we get a palindrome (987909789).

The spelling of 106405188 in words is "one hundred six million, four hundred five thousand, one hundred eighty-eight".