22406406 has 16 divisors (see below), whose sum is σ = 48886848. Its totient is φ = 6789800.

The previous prime is 22406387. The next prime is 22406411. The reversal of 22406406 is 60460422.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169680 + ... + 169811.

It is an arithmetic number, because the mean of its divisors is an integer number (3055428).

Almost surely, 2^22406406 is an apocalyptic number.

22406406 is an abundant number, since it is smaller than the sum of its proper divisors (26480442).

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

22406406 is a wasteful number, since it uses less digits than its factorization.

22406406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339507.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 22406406 is about 4733.5405353710. The cubic root of 22406406 is about 281.9188187426.

Adding to 22406406 its reverse (60460422), we get a palindrome (82866828).

It can be divided in two parts, 2240 and 6406, that added together give a triangular number (8646 = T₁₃₁).

The spelling of 22406406 in words is "twenty-two million, four hundred six thousand, four hundred six".