243826426 has 16 divisors (see below), whose sum is σ = 383378688. Its totient is φ = 116172000.

The previous prime is 243826391. The next prime is 243826463. The reversal of 243826426 is 624628342.

243826426 = 444² + 445² + ... + 935².

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31050 + ... + 38101.

It is an arithmetic number, because the mean of its divisors is an integer number (23961168).

Almost surely, 2^243826426 is an apocalyptic number.

243826426 is a deficient number, since it is larger than the sum of its proper divisors (139552262).

243826426 is a wasteful number, since it uses less digits than its factorization.

243826426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69237.

The product of its digits is 110592, while the sum is 37.

The square root of 243826426 is about 15614.9423950266. The cubic root of 243826426 is about 624.7317684194.

The spelling of 243826426 in words is "two hundred forty-three million, eight hundred twenty-six thousand, four hundred twenty-six".