20232018 has 40 divisors (see below), whose sum is σ = 45999360. Its totient is φ = 6645240.

The previous prime is 20232013. The next prime is 20232029. The reversal of 20232018 is 81023202.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (20232011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 10623 + ... + 12381.

It is an arithmetic number, because the mean of its divisors is an integer number (1149984).

Almost surely, 2^20232018 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20232018, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22999680).

20232018 is an abundant number, since it is smaller than the sum of its proper divisors (25767342).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20232018 is a wasteful number, since it uses less digits than its factorization.

20232018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1844 (or 1835 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 20232018 is about 4498.0015562470. The cubic root of 20232018 is about 272.4873848774.

The spelling of 20232018 in words is "twenty million, two hundred thirty-two thousand, eighteen".