20447413 has 8 divisors (see below), whose sum is σ = 24743232. Its totient is φ = 16495296.

The previous prime is 20447411. The next prime is 20447417. The reversal of 20447413 is 31474402.

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 20447413 - 2¹ = 20447411 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 (20447411) 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, 85795 + ... + 86032.

It is an arithmetic number, because the mean of its divisors is an integer number (3092904).

Almost surely, 2^20447413 is an apocalyptic number.

It is an amenable number.

20447413 is a deficient number, since it is larger than the sum of its proper divisors (4295819).

20447413 is a wasteful number, since it uses less digits than its factorization.

20447413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171851.

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 20447413 is about 4521.8815773967. The cubic root of 20447413 is about 273.4509624915.

The spelling of 20447413 in words is "twenty million, four hundred forty-seven thousand, four hundred thirteen".