20412229 has 8 divisors (see below), whose sum is σ = 21562112. Its totient is φ = 19293120.

The previous prime is 20412221. The next prime is 20412233. The reversal of 20412229 is 92221402.

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 20412229 - 2³ = 20412221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20412221) 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, 6324 + ... + 8989.

It is an arithmetic number, because the mean of its divisors is an integer number (2695264).

Almost surely, 2^20412229 is an apocalyptic number.

It is an amenable number.

20412229 is a deficient number, since it is larger than the sum of its proper divisors (1149883).

20412229 is a wasteful number, since it uses less digits than its factorization.

20412229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15387.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 20412229 is about 4517.9894864862. The cubic root of 20412229 is about 273.2940294798.

The spelling of 20412229 in words is "twenty million, four hundred twelve thousand, two hundred twenty-nine".