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28726341 = 371367921
BaseRepresentation
bin110110110010…
…1010001000101
32000001110010120
41231211101011
524323220331
62503412153
7466112160
oct155452105
960043116
1028726341
1115240586
129754059
135c4a347
143b5aad7
1527c6796
hex1b65445

28726341 has 8 divisors (see below), whose sum is σ = 43773504. Its totient is φ = 16415040.

The previous prime is 28726339. The next prime is 28726361. The reversal of 28726341 is 14362782.

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

It is not a de Polignac number, because 28726341 - 21 = 28726339 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28726331) 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, 683940 + ... + 683981.

It is an arithmetic number, because the mean of its divisors is an integer number (5471688).

Almost surely, 228726341 is an apocalyptic number.

28726341 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

28726341 is a deficient number, since it is larger than the sum of its proper divisors (15047163).

28726341 is a wasteful number, since it uses less digits than its factorization.

28726341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1367931.

The product of its digits is 16128, while the sum is 33.

The square root of 28726341 is about 5359.6959801840. The cubic root of 28726341 is about 306.2622276945.

The spelling of 28726341 in words is "twenty-eight million, seven hundred twenty-six thousand, three hundred forty-one".

Divisors: 1 3 7 21 1367921 4103763 9575447 28726341