20624093 has 4 divisors (see below), whose sum is σ = 23570400. Its totient is φ = 17677788.

The previous prime is 20624069. The next prime is 20624113. The reversal of 20624093 is 39042602.

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, and also an emirpimes, since its reverse is a distinct semiprime: 39042602 = 2 ⋅19521301.

It is a cyclic number.

It is not a de Polignac number, because 20624093 - 2¹⁴ = 20607709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20624003) 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, 1473143 + ... + 1473156.

It is an arithmetic number, because the mean of its divisors is an integer number (5892600).

Almost surely, 2^20624093 is an apocalyptic number.

It is an amenable number.

20624093 is a deficient number, since it is larger than the sum of its proper divisors (2946307).

20624093 is an equidigital number, since it uses as much as digits as its factorization.

20624093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2946306.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 20624093 is about 4541.3756726349. The cubic root of 20624093 is about 274.2363075873.

Adding to 20624093 its reverse (39042602), we get a palindrome (59666695).

The spelling of 20624093 in words is "twenty million, six hundred twenty-four thousand, ninety-three".