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28002530525207 = 731129043919471
BaseRepresentation
bin1100101110111110110001…
…11000101000000000010111
310200011000102111110220111212
412113133120320220000113
512132243140303301312
6135320103540052035
75620054545113510
oct627373070500027
9120130374426455
1028002530525207
118a16896503317
1231830b299401b
131281820234394
146cb488a15a07
15338624056822
hex1977d8e28017

28002530525207 has 8 divisors (see below), whose sum is σ = 33035243384832. Its totient is φ = 23227905504600.

The previous prime is 28002530525183. The next prime is 28002530525239. The reversal of 28002530525207 is 70252503520082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28002530525207 - 220 = 28002529476631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28002530525707) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64521959519 + ... + 64521959952.

It is an arithmetic number, because the mean of its divisors is an integer number (4129405423104).

Almost surely, 228002530525207 is an apocalyptic number.

28002530525207 is a deficient number, since it is larger than the sum of its proper divisors (5032712859625).

28002530525207 is a wasteful number, since it uses less digits than its factorization.

28002530525207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129043919509.

The product of its (nonzero) digits is 336000, while the sum is 41.

The spelling of 28002530525207 in words is "twenty-eight trillion, two billion, five hundred thirty million, five hundred twenty-five thousand, two hundred seven".

Divisors: 1 7 31 217 129043919471 903307436297 4000361503601 28002530525207