28239509683246 has 32 divisors (see below), whose sum is σ = 45467845804800. Its totient is φ = 13124738672640.

The previous prime is 28239509683241. The next prime is 28239509683249. The reversal of 28239509683246 is 64238690593282.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28239509683241) 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, 40342281 + ... + 41036308.

It is an arithmetic number, because the mean of its divisors is an integer number (1420870181400).

Almost surely, 2^{28239509683246} is an apocalyptic number.

28239509683246 is a deficient number, since it is larger than the sum of its proper divisors (17228336121554).

28239509683246 is a wasteful number, since it uses less digits than its factorization.

28239509683246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81378844.

The product of its (nonzero) digits is 268738560, while the sum is 67.

The spelling of 28239509683246 in words is "twenty-eight trillion, two hundred thirty-nine billion, five hundred nine million, six hundred eighty-three thousand, two hundred forty-six".