28931170417660 has 480 divisors, whose sum is σ = 77612730273792. Its totient is φ = 9017667348480.

The previous prime is 28931170417657. The next prime is 28931170417717. The reversal of 28931170417660 is 6671407113982.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 24876328239 + ... + 24876329401.

Almost surely, 2^{28931170417660} is an apocalyptic number.

28931170417660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28931170417660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38806365136896).

28931170417660 is an abundant number, since it is smaller than the sum of its proper divisors (48681559856132).

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

28931170417660 is a wasteful number, since it uses less digits than its factorization.

28931170417660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2231 (or 2208 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 55.

The spelling of 28931170417660 in words is "twenty-eight trillion, nine hundred thirty-one billion, one hundred seventy million, four hundred seventeen thousand, six hundred sixty".