20124993 has 8 divisors (see below), whose sum is σ = 30666688. Its totient is φ = 11499984.

The previous prime is 20124953. The next prime is 20125019. The reversal of 20124993 is 39942102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20124993 - 2¹⁴ = 20108609 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20124993.

It is not an unprimeable number, because it can be changed into a prime (20124943) 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, 479146 + ... + 479187.

It is an arithmetic number, because the mean of its divisors is an integer number (3833336).

Almost surely, 2^20124993 is an apocalyptic number.

It is an amenable number.

20124993 is a deficient number, since it is larger than the sum of its proper divisors (10541695).

20124993 is an equidigital number, since it uses as much as digits as its factorization.

20124993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 958343.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 20124993 is about 4486.0888310420. The cubic root of 20124993 is about 272.0060597338.

The spelling of 20124993 in words is "twenty million, one hundred twenty-four thousand, nine hundred ninety-three".