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28694101 = 211239569
BaseRepresentation
bin110110101110…
…1011001010101
31222222210220111
41231131121111
524321202401
62503003021
7465616162
oct155353125
958883814
1028694101
1115219337
129739471
135c38777
143b4d069
1527bbe51
hex1b5d655

28694101 has 8 divisors (see below), whose sum is σ = 29001600. Its totient is φ = 28388640.

The previous prime is 28694053. The next prime is 28694117. The reversal of 28694101 is 10149682.

It is a happy number.

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 28694101 - 29 = 28693589 is a prime.

It is a pancake number, because a pancake can be divided into 28694101 parts by 7575 straight cuts.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28694131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50145 + ... + 50713.

It is an arithmetic number, because the mean of its divisors is an integer number (3625200).

Almost surely, 228694101 is an apocalyptic number.

It is an amenable number.

28694101 is a deficient number, since it is larger than the sum of its proper divisors (307499).

28694101 is a wasteful number, since it uses less digits than its factorization.

28694101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1019.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 28694101 is about 5356.6875025523. The cubic root of 28694101 is about 306.1476105863.

The spelling of 28694101 in words is "twenty-eight million, six hundred ninety-four thousand, one hundred one".

Divisors: 1 211 239 569 50429 120059 135991 28694101