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28190341 = 231518117
BaseRepresentation
bin110101110001…
…0011010000101
31222001012212201
41223202122011
524204042331
62444114501
7461420404
oct153423205
958035781
1028190341
1114a04903
129535a31
135ac039a
143a5b63b
15271ca61
hex1ae2685

28190341 has 8 divisors (see below), whose sum is σ = 29614464. Its totient is φ = 26782800.

The previous prime is 28190339. The next prime is 28190359. The reversal of 28190341 is 14309182.

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 28190341 - 21 = 28190339 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 (28190311) 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, 586 + ... + 7531.

It is an arithmetic number, because the mean of its divisors is an integer number (3701808).

Almost surely, 228190341 is an apocalyptic number.

It is an amenable number.

28190341 is a deficient number, since it is larger than the sum of its proper divisors (1424123).

28190341 is a wasteful number, since it uses less digits than its factorization.

28190341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8291.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 28190341 is about 5309.4576935879. The cubic root of 28190341 is about 304.3454241002.

The spelling of 28190341 in words is "twenty-eight million, one hundred ninety thousand, three hundred forty-one".

Divisors: 1 23 151 3473 8117 186691 1225667 28190341