20106402 has 16 divisors (see below), whose sum is σ = 40260000. Its totient is φ = 6694272.

The previous prime is 20106397. The next prime is 20106403. The reversal of 20106402 is 20460102.

It is not an unprimeable number, because it can be changed into a prime (20106403) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 6153 + ... + 8835.

It is an arithmetic number, because the mean of its divisors is an integer number (2516250).

Almost surely, 2^20106402 is an apocalyptic number.

20106402 is an abundant number, since it is smaller than the sum of its proper divisors (20153598).

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

20106402 is a wasteful number, since it uses less digits than its factorization.

20106402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3937.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 20106402 is about 4484.0162800775. The cubic root of 20106402 is about 271.9222763077.

Adding to 20106402 its reverse (20460102), we get a palindrome (40566504).

The spelling of 20106402 in words is "twenty million, one hundred six thousand, four hundred two".