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272120049 = 3230235561
BaseRepresentation
bin10000001110000…
…011100011110001
3200222001010112100
4100032003203301
51024130320144
643000251013
76512660625
oct2016034361
9628033470
10272120049
1112a671903
1277170a69
13444b8aa6
14281d7185
1518d53269
hex103838f1

272120049 has 6 divisors (see below), whose sum is σ = 393062306. Its totient is φ = 181413360.

The previous prime is 272120047. The next prime is 272120059. The reversal of 272120049 is 940021272.

It can be written as a sum of positive squares in only one way, i.e., 171479025 + 100641024 = 13095^2 + 10032^2 .

It is not a de Polignac number, because 272120049 - 21 = 272120047 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (272120047) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15117772 + ... + 15117789.

Almost surely, 2272120049 is an apocalyptic number.

It is an amenable number.

272120049 is a deficient number, since it is larger than the sum of its proper divisors (120942257).

272120049 is a wasteful number, since it uses less digits than its factorization.

272120049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30235567 (or 30235564 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 272120049 is about 16496.0616208839. The cubic root of 272120049 is about 648.0176678425.

The spelling of 272120049 in words is "two hundred seventy-two million, one hundred twenty thousand, forty-nine".

Divisors: 1 3 9 30235561 90706683 272120049