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28371348877 = 208123995683
BaseRepresentation
bin11010011011000100…
…000110110110001101
32201020020200212001011
4122123010012312031
5431101031131002
621011132245221
72023032325564
oct323304066615
981206625034
1028371348877
1111039983373
1255b9610811
1328a1b3a301
141532016bdb
15b10b6a8d7
hex69b106d8d

28371348877 has 8 divisors (see below), whose sum is σ = 28401811200. Its totient is φ = 28340906880.

The previous prime is 28371348847. The next prime is 28371348899. The reversal of 28371348877 is 77884317382.

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 28371348877 - 227 = 28237131149 is a prime.

It is a super-2 number, since 2×283713488772 (a number of 22 digits) contains 22 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 (28371348847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4989478 + ... + 4995160.

It is an arithmetic number, because the mean of its divisors is an integer number (3550226400).

Almost surely, 228371348877 is an apocalyptic number.

It is an amenable number.

28371348877 is a deficient number, since it is larger than the sum of its proper divisors (30462323).

28371348877 is a wasteful number, since it uses less digits than its factorization.

28371348877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10163.

The product of its digits is 12644352, while the sum is 58.

The spelling of 28371348877 in words is "twenty-eight billion, three hundred seventy-one million, three hundred forty-eight thousand, eight hundred seventy-seven".

Divisors: 1 2081 2399 5683 4992319 11826323 13633517 28371348877