23402166 has 16 divisors (see below), whose sum is σ = 49557744. Its totient is φ = 7341824.

The previous prime is 23402161. The next prime is 23402189. The reversal of 23402166 is 66120432.

It is a super-2 number, since 2×23402166² = 1095322746983112, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23402161) 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 7 ways as a sum of consecutive naturals, for example, 114615 + ... + 114818.

It is an arithmetic number, because the mean of its divisors is an integer number (3097359).

Almost surely, 2^23402166 is an apocalyptic number.

23402166 is an abundant number, since it is smaller than the sum of its proper divisors (26155578).

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

23402166 is a wasteful number, since it uses less digits than its factorization.

23402166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229455.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 23402166 is about 4837.5785264944. The cubic root of 23402166 is about 286.0346755681.

Adding to 23402166 its reverse (66120432), we get a palindrome (89522598).

The spelling of 23402166 in words is "twenty-three million, four hundred two thousand, one hundred sixty-six".