28547309934 has 96 divisors (see below), whose sum is σ = 73333260000. Its totient is φ = 7911924480.

The previous prime is 28547309927. The next prime is 28547309957. The reversal of 28547309934 is 43990374582.

28547309934 is a `hidden beast` number, since 2 + 8 + 547 + 3 + 0 + 9 + 93 + 4 = 666.

It is a congruent number.

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, 229692 + ... + 331440.

It is an arithmetic number, because the mean of its divisors is an integer number (763888125).

Almost surely, 2^28547309934 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28547309934, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36666630000).

28547309934 is an abundant number, since it is smaller than the sum of its proper divisors (44785950066).

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

28547309934 is a wasteful number, since it uses less digits than its factorization.

28547309934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101890 (or 101887 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 54.

The spelling of 28547309934 in words is "twenty-eight billion, five hundred forty-seven million, three hundred nine thousand, nine hundred thirty-four".