22429973 has 4 divisors (see below), whose sum is σ = 22493868. Its totient is φ = 22366080.

The previous prime is 22429949. The next prime is 22429999. The reversal of 22429973 is 37992422.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14002564 + 8427409 = 3742^2 + 2903^2 .

It is not a de Polignac number, because 22429973 - 2⁶ = 22429909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22429903) 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, 31418 + ... + 32123.

It is an arithmetic number, because the mean of its divisors is an integer number (5623467).

Almost surely, 2^22429973 is an apocalyptic number.

It is an amenable number.

22429973 is a deficient number, since it is larger than the sum of its proper divisors (63895).

22429973 is an equidigital number, since it uses as much as digits as its factorization.

22429973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63894.

The product of its digits is 54432, while the sum is 38.

The square root of 22429973 is about 4736.0292439975. The cubic root of 22429973 is about 282.0176246047.

The spelling of 22429973 in words is "twenty-two million, four hundred twenty-nine thousand, nine hundred seventy-three".