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28233677 = 193674049
BaseRepresentation
bin110101110110…
…0111111001101
31222010102022202
41223230333031
524211434202
62445051245
7461660633
oct153547715
958112282
1028233677
1114a3441a
129556b25
135b07024
143a6d353
15272a802
hex1aecfcd

28233677 has 8 divisors (see below), whose sum is σ = 29808000. Its totient is φ = 26668224.

The previous prime is 28233637. The next prime is 28233691. The reversal of 28233677 is 77633282.

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 28233677 - 26 = 28233613 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28233677.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28233607) 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, 4949 + ... + 8997.

It is an arithmetic number, because the mean of its divisors is an integer number (3726000).

Almost surely, 228233677 is an apocalyptic number.

It is an amenable number.

28233677 is a deficient number, since it is larger than the sum of its proper divisors (1574323).

28233677 is a wasteful number, since it uses less digits than its factorization.

28233677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4435.

The product of its digits is 84672, while the sum is 38.

The square root of 28233677 is about 5313.5371458192. The cubic root of 28233677 is about 304.5012973558.

The spelling of 28233677 in words is "twenty-eight million, two hundred thirty-three thousand, six hundred seventy-seven".

Divisors: 1 19 367 4049 6973 76931 1485983 28233677