20106146 has 8 divisors (see below), whose sum is σ = 30194220. Its totient is φ = 10041408.

The previous prime is 20106143. The next prime is 20106157. The reversal of 20106146 is 64160102.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19669225 + 436921 = 4435^2 + 661^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (20106143) 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, 3491 + ... + 7238.

Almost surely, 2^20106146 is an apocalyptic number.

20106146 is a deficient number, since it is larger than the sum of its proper divisors (10088074).

20106146 is a wasteful number, since it uses less digits than its factorization.

20106146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11668.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 20106146 is about 4483.9877341491. The cubic root of 20106146 is about 271.9211222408.

Adding to 20106146 its reverse (64160102), we get a palindrome (84266248).

The spelling of 20106146 in words is "twenty million, one hundred six thousand, one hundred forty-six".