243902026 has 8 divisors (see below), whose sum is σ = 387373860. Its totient is φ = 114777408.

The previous prime is 243902023. The next prime is 243902081. The reversal of 243902026 is 620209342.

It can be written as a sum of positive squares in 2 ways, for example, as 218892025 + 25010001 = 14795^2 + 5001^2 .

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 = 243901985 and 243902003.

It is not an unprimeable number, because it can be changed into a prime (243902023) 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 3 ways as a sum of consecutive naturals, for example, 3586761 + ... + 3586828.

Almost surely, 2^243902026 is an apocalyptic number.

243902026 is a deficient number, since it is larger than the sum of its proper divisors (143471834).

243902026 is a wasteful number, since it uses less digits than its factorization.

243902026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7173608.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 243902026 is about 15617.3629656226. The cubic root of 243902026 is about 624.7963291563.

The spelling of 243902026 in words is "two hundred forty-three million, nine hundred two thousand, twenty-six".