20756093 has 4 divisors (see below), whose sum is σ = 21197760. Its totient is φ = 20314428.

The previous prime is 20756089. The next prime is 20756101. The reversal of 20756093 is 39065702.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20756093 - 2² = 20756089 is a prime.

It is a super-3 number, since 3×20756093³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20756053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220763 + ... + 220856.

It is an arithmetic number, because the mean of its divisors is an integer number (5299440).

Almost surely, 2^20756093 is an apocalyptic number.

It is an amenable number.

20756093 is a deficient number, since it is larger than the sum of its proper divisors (441667).

20756093 is an equidigital number, since it uses as much as digits as its factorization.

20756093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441666.

The product of its (nonzero) digits is 11340, while the sum is 32.

The square root of 20756093 is about 4555.8855341196. The cubic root of 20756093 is about 274.8201270018.

The spelling of 20756093 in words is "twenty million, seven hundred fifty-six thousand, ninety-three".