16622406 has 12 divisors (see below), whose sum is σ = 36015252. Its totient is φ = 5540796.

The previous prime is 16622393. The next prime is 16622407. The reversal of 16622406 is 60422661.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 16622406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16622407) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 461716 + ... + 461751.

It is an arithmetic number, because the mean of its divisors is an integer number (3001271).

Almost surely, 2^16622406 is an apocalyptic number.

16622406 is an abundant number, since it is smaller than the sum of its proper divisors (19392846).

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

16622406 is a wasteful number, since it uses less digits than its factorization.

16622406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 923475 (or 923472 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 16622406 is about 4077.0584984766. The cubic root of 16622406 is about 255.2101612323.

The spelling of 16622406 in words is "sixteen million, six hundred twenty-two thousand, four hundred six".