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28153101 = 341228887
BaseRepresentation
bin110101101100…
…1010100001101
31221222022210110
41223121110031
524201344401
62443230233
7461204004
oct153312415
957868713
1028153101
1114989929
129518379
135aa9452
143a4bc3b
1527119d6
hex1ad950d

28153101 has 8 divisors (see below), whose sum is σ = 38453184. Its totient is φ = 18310880.

The previous prime is 28153067. The next prime is 28153121. The reversal of 28153101 is 10135182.

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 28153101 - 27 = 28152973 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28153121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114321 + ... + 114566.

It is an arithmetic number, because the mean of its divisors is an integer number (4806648).

Almost surely, 228153101 is an apocalyptic number.

It is an amenable number.

28153101 is a deficient number, since it is larger than the sum of its proper divisors (10300083).

28153101 is a wasteful number, since it uses less digits than its factorization.

28153101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228931.

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 28153101 is about 5305.9495851355. The cubic root of 28153101 is about 304.2113495958.

Adding to 28153101 its reverse (10135182), we get a palindrome (38288283).

The spelling of 28153101 in words is "twenty-eight million, one hundred fifty-three thousand, one hundred one".

Divisors: 1 3 41 123 228887 686661 9384367 28153101