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28478088941 = 263290937223
BaseRepresentation
bin11010100001011011…
…010010011011101101
32201111200112210212212
4122201123102123231
5431310342321231
621025504140205
72025466522241
oct324133223355
981450483785
1028478088941
11110941587a5
125629307665
1328baca0903
141542280421
15b1a20242b
hex6a16d26ed

28478088941 has 8 divisors (see below), whose sum is σ = 28596965760. Its totient is φ = 28359292912.

The previous prime is 28478088931. The next prime is 28478088959. The reversal of 28478088941 is 14988087482.

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 28478088941 - 210 = 28478087917 is a prime.

It is a super-2 number, since 2×284780889412 (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 (28478088931) 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, 746456 + ... + 783678.

It is an arithmetic number, because the mean of its divisors is an integer number (3574620720).

Almost surely, 228478088941 is an apocalyptic number.

It is an amenable number.

28478088941 is a deficient number, since it is larger than the sum of its proper divisors (118876819).

28478088941 is a wasteful number, since it uses less digits than its factorization.

28478088941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40395.

The product of its (nonzero) digits is 8257536, while the sum is 59.

The spelling of 28478088941 in words is "twenty-eight billion, four hundred seventy-eight million, eighty-eight thousand, nine hundred forty-one".

Divisors: 1 263 2909 37223 765067 9789649 108281707 28478088941