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13420711 = 78717053
BaseRepresentation
bin110011001100…
…100010100111
3221020211202101
4303030202213
511413430321
61155352531
7222034303
oct63144247
927224671
1013420711
1176371a7
1245b2747
132a1b865
141ad4d03
1512a1791
hexccc8a7

13420711 has 4 divisors (see below), whose sum is σ = 13438552. Its totient is φ = 13402872.

The previous prime is 13420699. The next prime is 13420723. The reversal of 13420711 is 11702431.

13420711 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11702431 = 13900187.

It is an interprime number because it is at equal distance from previous prime (13420699) and next prime (13420723).

It is a cyclic number.

It is not a de Polignac number, because 13420711 - 215 = 13387943 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 (13420741) 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, 7740 + ... + 9313.

It is an arithmetic number, because the mean of its divisors is an integer number (3359638).

Almost surely, 213420711 is an apocalyptic number.

13420711 is a deficient number, since it is larger than the sum of its proper divisors (17841).

13420711 is an equidigital number, since it uses as much as digits as its factorization.

13420711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17840.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 13420711 is about 3663.4288583239. The cubic root of 13420711 is about 237.6430812814.

The spelling of 13420711 in words is "thirteen million, four hundred twenty thousand, seven hundred eleven".

Divisors: 1 787 17053 13420711