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28950052925 = 5231210311699
BaseRepresentation
bin11010111101100011…
…101100000000111101
32202201120122001202102
4122331203230000331
5433242203143200
621144404034445
72043260250443
oct327543540075
982646561672
1028950052925
1111306606282
12573b392a25
1329649ba941
141588c18b93
15b4687d6d5
hex6bd8ec03d

28950052925 has 36 divisors (see below), whose sum is σ = 37456754400. Its totient is φ = 22193445600.

The previous prime is 28950052907. The next prime is 28950052933. The reversal of 28950052925 is 52925005982.

It is a happy number.

It is not a de Polignac number, because 28950052925 - 26 = 28950052861 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28950052925.

It is a congruent number.

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 2468726 + ... + 2480424.

It is an arithmetic number, because the mean of its divisors is an integer number (1040465400).

Almost surely, 228950052925 is an apocalyptic number.

28950052925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28950052925 is a deficient number, since it is larger than the sum of its proper divisors (8506701475).

28950052925 is a wasteful number, since it uses less digits than its factorization.

28950052925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11874 (or 11838 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 47.

The spelling of 28950052925 in words is "twenty-eight billion, nine hundred fifty million, fifty-two thousand, nine hundred twenty-five".

Divisors: 1 5 25 31 103 155 515 775 961 2575 3193 4805 11699 15965 24025 58495 79825 98983 292475 362669 494915 1204997 1813345 2474575 6024985 9066725 11242739 30124925 37354907 56213695 186774535 281068475 933872675 1158002117 5790010585 28950052925