28924071238 has 16 divisors (see below), whose sum is σ = 43958557440. Its totient is φ = 14271613576.

The previous prime is 28924071233. The next prime is 28924071251. The reversal of 28924071238 is 83217042982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28924071233) 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, 49023 + ... + 245461.

It is an arithmetic number, because the mean of its divisors is an integer number (2747409840).

Almost surely, 2^28924071238 is an apocalyptic number.

28924071238 is a deficient number, since it is larger than the sum of its proper divisors (15034486202).

28924071238 is a wasteful number, since it uses less digits than its factorization.

28924071238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197411.

The product of its (nonzero) digits is 387072, while the sum is 46.

The spelling of 28924071238 in words is "twenty-eight billion, nine hundred twenty-four million, seventy-one thousand, two hundred thirty-eight".