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122215413 = 347985049
BaseRepresentation
bin1110100100011…
…01101111110101
322111222012000210
413102031233311
5222241343123
620043300033
73012546105
oct722155765
9274865023
10122215413
1162a95281
1234b1a619
131c421418
1412335205
15aae1e93
hex748dbf5

122215413 has 8 divisors (see below), whose sum is σ = 163296000. Its totient is φ = 81305888.

The previous prime is 122215393. The next prime is 122215421. The reversal of 122215413 is 314512221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 122215413 - 25 = 122215381 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122215413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122215433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41088 + ... + 43961.

It is an arithmetic number, because the mean of its divisors is an integer number (20412000).

Almost surely, 2122215413 is an apocalyptic number.

It is an amenable number.

122215413 is a deficient number, since it is larger than the sum of its proper divisors (41080587).

122215413 is an equidigital number, since it uses as much as digits as its factorization.

122215413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85531.

The product of its digits is 480, while the sum is 21.

The square root of 122215413 is about 11055.1080048998. The cubic root of 122215413 is about 496.2593014730.

Adding to 122215413 its reverse (314512221), we get a palindrome (436727634).

The spelling of 122215413 in words is "one hundred twenty-two million, two hundred fifteen thousand, four hundred thirteen".

Divisors: 1 3 479 1437 85049 255147 40738471 122215413