20907093 has 8 divisors (see below), whose sum is σ = 29515968. Its totient is φ = 13118144.

The previous prime is 20907091. The next prime is 20907137. The reversal of 20907093 is 39070902.

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 20907093 - 2¹ = 20907091 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20907093.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20907091) 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, 204921 + ... + 205022.

It is an arithmetic number, because the mean of its divisors is an integer number (3689496).

Almost surely, 2^20907093 is an apocalyptic number.

It is an amenable number.

20907093 is a deficient number, since it is larger than the sum of its proper divisors (8608875).

20907093 is a wasteful number, since it uses less digits than its factorization.

20907093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409963.

The product of its (nonzero) digits is 3402, while the sum is 30.

The square root of 20907093 is about 4572.4274734543. The cubic root of 20907093 is about 275.4849536635.

Adding to 20907093 its reverse (39070902), we get a palindrome (59977995).

The spelling of 20907093 in words is "twenty million, nine hundred seven thousand, ninety-three".