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28950943 = 710140949
BaseRepresentation
bin110111001110…
…0000110011111
32000110212020011
41232130012133
524402412233
62512304051
7501036040
oct156340637
960425204
1028950943
11153842aa
129842027
135cc8648
143bb88c7
15281d0cd
hex1b9c19f

28950943 has 8 divisors (see below), whose sum is σ = 33415200. Its totient is φ = 24568800.

The previous prime is 28950941. The next prime is 28950959. The reversal of 28950943 is 34905982.

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 28950943 - 21 = 28950941 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28950896 and 28950905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28950941) 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, 19768 + ... + 21181.

It is an arithmetic number, because the mean of its divisors is an integer number (4176900).

Almost surely, 228950943 is an apocalyptic number.

28950943 is a deficient number, since it is larger than the sum of its proper divisors (4464257).

28950943 is a wasteful number, since it uses less digits than its factorization.

28950943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41057.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 28950943 is about 5380.6080511407. The cubic root of 28950943 is about 307.0583449677.

The spelling of 28950943 in words is "twenty-eight million, nine hundred fifty thousand, nine hundred forty-three".

Divisors: 1 7 101 707 40949 286643 4135849 28950943