22146429 has 4 divisors (see below), whose sum is σ = 29528576. Its totient is φ = 14764284.

The previous prime is 22146413. The next prime is 22146433. The reversal of 22146429 is 92464122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 22146429 - 2⁴ = 22146413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22146396 and 22146405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22146469) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3691069 + ... + 3691074.

It is an arithmetic number, because the mean of its divisors is an integer number (7382144).

Almost surely, 2^22146429 is an apocalyptic number.

It is an amenable number.

22146429 is a deficient number, since it is larger than the sum of its proper divisors (7382147).

22146429 is an equidigital number, since it uses as much as digits as its factorization.

22146429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7382146.

The product of its digits is 6912, while the sum is 30.

The square root of 22146429 is about 4705.9992562685. Note that the first 3 decimals coincide. The cubic root of 22146429 is about 280.8242252904.

The spelling of 22146429 in words is "twenty-two million, one hundred forty-six thousand, four hundred twenty-nine".