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13160072 = 231645009
BaseRepresentation
bin110010001100…
…111010001000
3220202121020002
4302030322020
511332110242
61150022132
7216600362
oct62147210
926677202
1013160072
1174793a2
1244a7948
13295a033
141a67d32
15124e432
hexc8ce88

13160072 has 8 divisors (see below), whose sum is σ = 24675150. Its totient is φ = 6580032.

The previous prime is 13160053. The next prime is 13160099. The reversal of 13160072 is 27006131.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 9572836 + 3587236 = 3094^2 + 1894^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 822497 + ... + 822512.

Almost surely, 213160072 is an apocalyptic number.

It is an amenable number.

13160072 is a deficient number, since it is larger than the sum of its proper divisors (11515078).

13160072 is a wasteful number, since it uses less digits than its factorization.

13160072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1645015 (or 1645011 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 13160072 is about 3627.6813531511. The cubic root of 13160072 is about 236.0946187676.

The spelling of 13160072 in words is "thirteen million, one hundred sixty thousand, seventy-two".

Divisors: 1 2 4 8 1645009 3290018 6580036 13160072