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272105893 = 17234871429
BaseRepresentation
bin10000001110000…
…000000110100101
3200222000102010001
4100032000012211
51024124342033
643000101301
76512601433
oct2016000645
9628012101
10272105893
1112a662204
1277164831
13444b2507
14281d1d53
1518d4de7d
hex103801a5

272105893 has 16 divisors (see below), whose sum is σ = 301466880. Its totient is φ = 244290816.

The previous prime is 272105887. The next prime is 272105903. The reversal of 272105893 is 398501272.

It is not a de Polignac number, because 272105893 - 29 = 272105381 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 (272105803) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 189703 + ... + 191131.

It is an arithmetic number, because the mean of its divisors is an integer number (18841680).

Almost surely, 2272105893 is an apocalyptic number.

272105893 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

272105893 is a deficient number, since it is larger than the sum of its proper divisors (29360987).

272105893 is a wasteful number, since it uses less digits than its factorization.

272105893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1956.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 272105893 is about 16495.6325431915. The cubic root of 272105893 is about 648.0064307712.

The spelling of 272105893 in words is "two hundred seventy-two million, one hundred five thousand, eight hundred ninety-three".

Divisors: 1 17 23 391 487 1429 8279 11201 24293 32867 190417 558739 695923 11830691 16006229 272105893