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28501001841 = 313730794919
BaseRepresentation
bin11010100010110010…
…101100011001110001
32201120021122220110210
4122202302230121301
5431332224024331
621032043214333
72026165342554
oct324262543161
981507586423
1028501001841
11110a6088584
125634b173a9
1328c2963b40
14154532669b
15b1c22b446
hex6a2cac671

28501001841 has 8 divisors (see below), whose sum is σ = 40924515520. Its totient is φ = 17539078032.

The previous prime is 28501001827. The next prime is 28501001861. The reversal of 28501001841 is 14810010582.

It is a happy number.

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

It is not a de Polignac number, because 28501001841 - 26 = 28501001777 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28501001799 and 28501001808.

It is not an unprimeable number, because it can be changed into a prime (28501001801) 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, 365397421 + ... + 365397498.

It is an arithmetic number, because the mean of its divisors is an integer number (5115564440).

Almost surely, 228501001841 is an apocalyptic number.

It is an amenable number.

28501001841 is a deficient number, since it is larger than the sum of its proper divisors (12423513679).

28501001841 is a wasteful number, since it uses less digits than its factorization.

28501001841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 730794935.

The product of its (nonzero) digits is 2560, while the sum is 30.

The spelling of 28501001841 in words is "twenty-eight billion, five hundred one million, one thousand, eight hundred forty-one".

Divisors: 1 3 13 39 730794919 2192384757 9500333947 28501001841