28317577229730 has 96 divisors (see below), whose sum is σ = 73917787507200. Its totient is φ = 7521443879040.

The previous prime is 28317577229581. The next prime is 28317577229761. The reversal of 28317577229730 is 3792277571382.

It is a happy number.

28317577229730 is a `hidden beast` number, since 2 + 8 + 3 + 1 + 7 + 577 + 2 + 29 + 7 + 30 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 28119699 + ... + 29109321.

It is an arithmetic number, because the mean of its divisors is an integer number (769976953200).

Almost surely, 2^{28317577229730} is an apocalyptic number.

28317577229730 is an abundant number, since it is smaller than the sum of its proper divisors (45600210277470).

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

28317577229730 is a wasteful number, since it uses less digits than its factorization.

28317577229730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990896 (or 990893 counting only the distinct ones).

The product of its (nonzero) digits is 62233920, while the sum is 63.

The spelling of 28317577229730 in words is "twenty-eight trillion, three hundred seventeen billion, five hundred seventy-seven million, two hundred twenty-nine thousand, seven hundred thirty".