243023198 has 32 divisors (see below), whose sum is σ = 428378112. Its totient is φ = 102247200.

The previous prime is 243023191. The next prime is 243023201. The reversal of 243023198 is 891320342.

It is a happy number.

It is a super-2 number, since 2×243023198² = 118120549532294408, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243023191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7940 + ... + 23432.

It is an arithmetic number, because the mean of its divisors is an integer number (13386816).

Almost surely, 2^243023198 is an apocalyptic number.

243023198 is a deficient number, since it is larger than the sum of its proper divisors (185354914).

243023198 is a wasteful number, since it uses less digits than its factorization.

243023198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15560.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 243023198 is about 15589.2013265594. The cubic root of 243023198 is about 624.0450038082.

The spelling of 243023198 in words is "two hundred forty-three million, twenty-three thousand, one hundred ninety-eight".