28017125157948 has 48 divisors (see below), whose sum is σ = 65633316672000. Its totient is φ = 9301907744064.

The previous prime is 28017125157947. The next prime is 28017125157977. The reversal of 28017125157948 is 84975152171082.

It is a super-2 number, since 2×28017125157948² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28017125157891 and 28017125157900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28017125157947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17371761 + ... + 18915927.

It is an arithmetic number, because the mean of its divisors is an integer number (1367360764000).

Almost surely, 2^{28017125157948} is an apocalyptic number.

It is an amenable number.

28017125157948 is an abundant number, since it is smaller than the sum of its proper divisors (37616191514052).

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

28017125157948 is a wasteful number, since it uses less digits than its factorization.

28017125157948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1550186 (or 1550184 counting only the distinct ones).

The product of its (nonzero) digits is 11289600, while the sum is 60.

The spelling of 28017125157948 in words is "twenty-eight trillion, seventeen billion, one hundred twenty-five million, one hundred fifty-seven thousand, nine hundred forty-eight".