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28977160471 = 719217873387
BaseRepresentation
bin11010111111001011…
…000110000100010111
32202210110122021022121
4122333023012010113
5433321123113341
621151213040411
72044036541260
oct327713060427
982713567277
1028977160471
111131a940606
125748486107
13296a4bc1cc
14158c673967
15b48e354d1
hex6bf2c6117

28977160471 has 8 divisors (see below), whose sum is σ = 34859742080. Its totient is φ = 23530325688.

The previous prime is 28977160453. The next prime is 28977160523. The reversal of 28977160471 is 17406177982.

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 28977160471 - 25 = 28977160439 is a prime.

It is a super-3 number, since 3×289771604713 (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28977140471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108936561 + ... + 108936826.

It is an arithmetic number, because the mean of its divisors is an integer number (4357467760).

Almost surely, 228977160471 is an apocalyptic number.

28977160471 is a deficient number, since it is larger than the sum of its proper divisors (5882581609).

28977160471 is a wasteful number, since it uses less digits than its factorization.

28977160471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217873413.

The product of its (nonzero) digits is 1185408, while the sum is 52.

The spelling of 28977160471 in words is "twenty-eight billion, nine hundred seventy-seven million, one hundred sixty thousand, four hundred seventy-one".

Divisors: 1 7 19 133 217873387 1525113709 4139594353 28977160471