20944493 has 8 divisors (see below), whose sum is σ = 22285440. Its totient is φ = 19615680.

The previous prime is 20944489. The next prime is 20944541. The reversal of 20944493 is 39444902.

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 20944493 - 2² = 20944489 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 (20944453) 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, 668 + ... + 6506.

It is an arithmetic number, because the mean of its divisors is an integer number (2785680).

Almost surely, 2^20944493 is an apocalyptic number.

It is an amenable number.

20944493 is a deficient number, since it is larger than the sum of its proper divisors (1340947).

20944493 is a wasteful number, since it uses less digits than its factorization.

20944493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6067.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 20944493 is about 4576.5153774460. The cubic root of 20944493 is about 275.6491244183.

The spelling of 20944493 in words is "twenty million, nine hundred forty-four thousand, four hundred ninety-three".