20240018 has 8 divisors (see below), whose sum is σ = 30440448. Its totient is φ = 10093204.

The previous prime is 20239991. The next prime is 20240021. The reversal of 20240018 is 81004202.

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

It is a junction number, because it is equal to n+sod(n) for n = 20239978 and 20240005.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12446 + ... + 13977.

It is an arithmetic number, because the mean of its divisors is an integer number (3805056).

Almost surely, 2^20240018 is an apocalyptic number.

20240018 is a deficient number, since it is larger than the sum of its proper divisors (10200430).

20240018 is a wasteful number, since it uses less digits than its factorization.

20240018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26808.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 20240018 is about 4498.8907521744. The cubic root of 20240018 is about 272.5232951496.

The spelling of 20240018 in words is "twenty million, two hundred forty thousand, eighteen".