20229473 has 8 divisors (see below), whose sum is σ = 23366880. Its totient is φ = 17308480.

The previous prime is 20229467. The next prime is 20229481. The reversal of 20229473 is 37492202.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20229473 - 2⁸ = 20229217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20229463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53903 + ... + 54276.

It is an arithmetic number, because the mean of its divisors is an integer number (2920860).

Almost surely, 2^20229473 is an apocalyptic number.

It is an amenable number.

20229473 is a deficient number, since it is larger than the sum of its proper divisors (3137407).

20229473 is a wasteful number, since it uses less digits than its factorization.

20229473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108207.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 20229473 is about 4497.7186439349. The cubic root of 20229473 is about 272.4759589373.

It can be divided in two parts, 20229 and 473, that added together give a palindrome (20702).

The spelling of 20229473 in words is "twenty million, two hundred twenty-nine thousand, four hundred seventy-three".