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28868801 = 139712287
BaseRepresentation
bin110111000100…
…0000011000001
32000022200112212
41232020003001
524342300201
62510431505
7500244413
oct156100301
960280485
1028868801
1115328615
129802595
135c9a140
143b969b3
152803abb
hex1b880c1

28868801 has 8 divisors (see below), whose sum is σ = 31135104. Its totient is φ = 26609040.

The previous prime is 28868779. The next prime is 28868803. The reversal of 28868801 is 10886882.

28868801 is nontrivially palindromic in base 14.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-28868801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28868803) 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, 11480 + ... + 13766.

It is an arithmetic number, because the mean of its divisors is an integer number (3891888).

Almost surely, 228868801 is an apocalyptic number.

It is an amenable number.

28868801 is a deficient number, since it is larger than the sum of its proper divisors (2266303).

28868801 is a wasteful number, since it uses less digits than its factorization.

28868801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3271.

The product of its (nonzero) digits is 49152, while the sum is 41.

The square root of 28868801 is about 5372.9694769280. The cubic root of 28868801 is about 306.7676661392.

The spelling of 28868801 in words is "twenty-eight million, eight hundred sixty-eight thousand, eight hundred one".

Divisors: 1 13 971 2287 12623 29731 2220677 28868801