28317750144 has 64 divisors (see below), whose sum is σ = 78489440640. Its totient is φ = 9028845056.

The previous prime is 28317750143. The next prime is 28317750151. The reversal of 28317750144 is 44105771382.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 28317750096 and 28317750105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28317750143) 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, 1594302 + ... + 1611965.

It is an arithmetic number, because the mean of its divisors is an integer number (1226397510).

Almost surely, 2^28317750144 is an apocalyptic number.

28317750144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28317750144 is an abundant number, since it is smaller than the sum of its proper divisors (50171690496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28317750144 is a wasteful number, since it uses less digits than its factorization.

28317750144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3206307 (or 3206295 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 42.

The spelling of 28317750144 in words is "twenty-eight billion, three hundred seventeen million, seven hundred fifty thousand, one hundred forty-four".