22002406 has 8 divisors (see below), whose sum is σ = 33023520. Its totient is φ = 10994568.

The previous prime is 22002391. The next prime is 22002433. The reversal of 22002406 is 60420022.

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

It is a self number, because there is not a number n which added to its sum of digits gives 22002406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4755 + ... + 8161.

It is an arithmetic number, because the mean of its divisors is an integer number (4127940).

Almost surely, 2^22002406 is an apocalyptic number.

22002406 is a deficient number, since it is larger than the sum of its proper divisors (11021114).

22002406 is a wasteful number, since it uses less digits than its factorization.

22002406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6638.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 22002406 is about 4690.6722332732. The cubic root of 22002406 is about 280.2141474002.

Adding to 22002406 its reverse (60420022), we get a palindrome (82422428).

The spelling of 22002406 in words is "twenty-two million, two thousand, four hundred six".