20482993 has 4 divisors (see below), whose sum is σ = 20558848. Its totient is φ = 20407140.

The previous prime is 20482981. The next prime is 20483009. The reversal of 20482993 is 39928402.

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 20482993 - 2⁹ = 20482481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20483993) 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, 37521 + ... + 38062.

It is an arithmetic number, because the mean of its divisors is an integer number (5139712).

Almost surely, 2^20482993 is an apocalyptic number.

It is an amenable number.

20482993 is a deficient number, since it is larger than the sum of its proper divisors (75855).

20482993 is an equidigital number, since it uses as much as digits as its factorization.

20482993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75854.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 20482993 is about 4525.8140704187. The cubic root of 20482993 is about 273.6094788347.

It can be divided in two parts, 2048 and 2993, that added together give a square (5041 = 71²).

The spelling of 20482993 in words is "twenty million, four hundred eighty-two thousand, nine hundred ninety-three".