22146406 has 4 divisors (see below), whose sum is σ = 33219612. Its totient is φ = 11073202.

The previous prime is 22146403. The next prime is 22146413. The reversal of 22146406 is 60464122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60464122 = 2 ⋅30232061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22146403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5536600 + ... + 5536603.

It is an arithmetic number, because the mean of its divisors is an integer number (8304903).

Almost surely, 2^22146406 is an apocalyptic number.

22146406 is a deficient number, since it is larger than the sum of its proper divisors (11073206).

22146406 is a wasteful number, since it uses less digits than its factorization.

22146406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11073205.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 22146406 is about 4705.9968125786. The cubic root of 22146406 is about 280.8241280745.

The spelling of 22146406 in words is "twenty-two million, one hundred forty-six thousand, four hundred six".