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13219007 = 108712161
BaseRepresentation
bin110010011011…
…010010111111
3220212121001212
4302123102333
511341002012
61151155035
7220234244
oct62332277
926777055
1013219007
1175096aa
124515a7b
13297aac9
141a815cb
151261b22
hexc9b4bf

13219007 has 4 divisors (see below), whose sum is σ = 13232256. Its totient is φ = 13205760.

The previous prime is 13218977. The next prime is 13219061. The reversal of 13219007 is 70091231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13219007 - 26 = 13218943 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 (13219067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4994 + ... + 7167.

It is an arithmetic number, because the mean of its divisors is an integer number (3308064).

Almost surely, 213219007 is an apocalyptic number.

13219007 is a deficient number, since it is larger than the sum of its proper divisors (13249).

13219007 is a wasteful number, since it uses less digits than its factorization.

13219007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13248.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 13219007 is about 3635.7952362585. The cubic root of 13219007 is about 236.4465296356.

The spelling of 13219007 in words is "thirteen million, two hundred nineteen thousand, seven".

Divisors: 1 1087 12161 13219007