23402106 has 108 divisors (see below), whose sum is σ = 64275822. Its totient is φ = 6132672.

The previous prime is 23402087. The next prime is 23402107. The reversal of 23402106 is 60120432.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 9272025 + 14130081 = 3045^2 + 3759^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

23402106 is a modest number, since divided by 2106 gives 234 as remainder.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (23402107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 148980 + ... + 149136.

Almost surely, 2^23402106 is an apocalyptic number.

23402106 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 23402106, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32137911).

23402106 is an abundant number, since it is smaller than the sum of its proper divisors (40873716).

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

23402106 is a wasteful number, since it uses less digits than its factorization.

23402106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205 (or 182 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 23402106 is about 4837.5723250407. The cubic root of 23402106 is about 286.0344311164.

Adding to 23402106 its reverse (60120432), we get a palindrome (83522538).

The spelling of 23402106 in words is "twenty-three million, four hundred two thousand, one hundred six".