28715844374 has 16 divisors (see below), whose sum is σ = 50557626528. Its totient is φ = 11974174272.

The previous prime is 28715844373. The next prime is 28715844413. The reversal of 28715844374 is 47344851782.

It is a happy number.

It is a super-2 number, since 2×28715844374² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28715844373) by changing a digit.

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, 27717479 + ... + 27718514.

It is an arithmetic number, because the mean of its divisors is an integer number (3159851658).

Almost surely, 2^28715844374 is an apocalyptic number.

28715844374 is a deficient number, since it is larger than the sum of its proper divisors (21841782154).

28715844374 is a wasteful number, since it uses less digits than its factorization.

28715844374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55436039.

The product of its digits is 6021120, while the sum is 53.

The spelling of 28715844374 in words is "twenty-eight billion, seven hundred fifteen million, eight hundred forty-four thousand, three hundred seventy-four".