202023018 has 16 divisors (see below), whose sum is σ = 448940160. Its totient is φ = 67340988.

The previous prime is 202023011. The next prime is 202023043. The reversal of 202023018 is 810320202.

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 (202023011) 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, 1870530 + ... + 1870637.

It is an arithmetic number, because the mean of its divisors is an integer number (28058760).

Almost surely, 2^202023018 is an apocalyptic number.

202023018 is an abundant number, since it is smaller than the sum of its proper divisors (246917142).

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

202023018 is a wasteful number, since it uses less digits than its factorization.

202023018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3741178 (or 3741172 counting only the distinct ones).

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

The square root of 202023018 is about 14213.4801508990. The cubic root of 202023018 is about 586.7687166799.

It can be divided in two parts, 20202 and 3018, that added together give a triangular number (23220 = T₂₁₅).

The spelling of 202023018 in words is "two hundred two million, twenty-three thousand, eighteen".