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28818853 = 714392861
BaseRepresentation
bin110110111101…
…1110110100101
32000020011000221
41231323312211
524334200403
62505404341
7466645660
oct155736645
960204027
1028818853
11152a4038
1297996b1
135c8049b
143b826d7
1527e3dbd
hex1b7bda5

28818853 has 8 divisors (see below), whose sum is σ = 32970240. Its totient is φ = 24676080.

The previous prime is 28818851. The next prime is 28818857. The reversal of 28818853 is 35881882.

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 28818853 - 21 = 28818851 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28818851) 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, 8643 + ... + 11503.

It is an arithmetic number, because the mean of its divisors is an integer number (4121280).

Almost surely, 228818853 is an apocalyptic number.

It is an amenable number.

28818853 is a deficient number, since it is larger than the sum of its proper divisors (4151387).

28818853 is a wasteful number, since it uses less digits than its factorization.

28818853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4307.

The product of its digits is 122880, while the sum is 43.

The square root of 28818853 is about 5368.3193831962. The cubic root of 28818853 is about 306.5906437000.

The spelling of 28818853 in words is "twenty-eight million, eight hundred eighteen thousand, eight hundred fifty-three".

Divisors: 1 7 1439 2861 10073 20027 4116979 28818853