28238187974 has 16 divisors (see below), whose sum is σ = 42433832112. Its totient is φ = 14093599968.

The previous prime is 28238187889. The next prime is 28238188003. The reversal of 28238187974 is 47978183282.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3293417 + ... + 3301979.

It is an arithmetic number, because the mean of its divisors is an integer number (2652114507).

Almost surely, 2^28238187974 is an apocalyptic number.

28238187974 is a deficient number, since it is larger than the sum of its proper divisors (14195644138).

28238187974 is a wasteful number, since it uses less digits than its factorization.

28238187974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11351.

The product of its digits is 10838016, while the sum is 59.

The spelling of 28238187974 in words is "twenty-eight billion, two hundred thirty-eight million, one hundred eighty-seven thousand, nine hundred seventy-four".