28409675156730 has 320 divisors, whose sum is σ = 90035139186432. Its totient is φ = 6291908720640.

The previous prime is 28409675156729. The next prime is 28409675156791. The reversal of 28409675156730 is 3765157690482.

28409675156730 is a `hidden beast` number, since 2 + 8 + 4 + 0 + 9 + 67 + 5 + 1 + 567 + 3 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 50278437 + ... + 50840343.

It is a 1-persistent number, because it is pandigital, but 2⋅28409675156730 = 56819350313460 is not.

Almost surely, 2^{28409675156730} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28409675156730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45017569593216).

28409675156730 is an abundant number, since it is smaller than the sum of its proper divisors (61625464029702).

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

28409675156730 is a wasteful number, since it uses less digits than its factorization.

28409675156730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562211 (or 562202 counting only the distinct ones).

The product of its (nonzero) digits is 76204800, while the sum is 63.

The spelling of 28409675156730 in words is "twenty-eight trillion, four hundred nine billion, six hundred seventy-five million, one hundred fifty-six thousand, seven hundred thirty".