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28050261 = 388310589
BaseRepresentation
bin110101100000…
…0001101010101
31221210002201120
41223000031111
524140102021
62441114153
7460265121
oct153001525
957702646
1028050261
1114919638
129488959
135a716b5
143a22581
1526e12c6
hex1ac0355

28050261 has 8 divisors (see below), whose sum is σ = 37446240. Its totient is φ = 18677232.

The previous prime is 28050247. The next prime is 28050277. The reversal of 28050261 is 16205082.

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

It is not a de Polignac number, because 28050261 - 214 = 28033877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28050241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2646 + ... + 7943.

It is an arithmetic number, because the mean of its divisors is an integer number (4680780).

Almost surely, 228050261 is an apocalyptic number.

It is an amenable number.

28050261 is a deficient number, since it is larger than the sum of its proper divisors (9395979).

28050261 is a wasteful number, since it uses less digits than its factorization.

28050261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11475.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 28050261 is about 5296.2497108803. The cubic root of 28050261 is about 303.8404814359.

The spelling of 28050261 in words is "twenty-eight million, fifty thousand, two hundred sixty-one".

Divisors: 1 3 883 2649 10589 31767 9350087 28050261