28820759144 has 32 divisors (see below), whose sum is σ = 54742800000. Its totient is φ = 14222812032.

The previous prime is 28820759131. The next prime is 28820759147. The reversal of 28820759144 is 44195702882.

It is a super-2 number, since 2×28820759144² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28820759092 and 28820759101.

It is not an unprimeable number, because it can be changed into a prime (28820759147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2204852 + ... + 2217884.

It is an arithmetic number, because the mean of its divisors is an integer number (1710712500).

Almost surely, 2^28820759144 is an apocalyptic number.

It is an amenable number.

28820759144 is a deficient number, since it is larger than the sum of its proper divisors (25922040856).

28820759144 is a wasteful number, since it uses less digits than its factorization.

28820759144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16617 (or 16613 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 50.

The spelling of 28820759144 in words is "twenty-eight billion, eight hundred twenty million, seven hundred fifty-nine thousand, one hundred forty-four".