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1220344141 = 19591088621
BaseRepresentation
bin100100010111100…
…1111100101001101
310011001021220110011
41020233033211031
54444402003031
6321032113221
742145516432
oct11057174515
93131256404
101220344141
11576941685
122a0835811
13165a98433
14b8107b89
15722086b1
hex48bcf94d

1220344141 has 8 divisors (see below), whose sum is σ = 1306346400. Its totient is φ = 1136519280.

The previous prime is 1220344117. The next prime is 1220344159. The reversal of 1220344141 is 1414430221.

It is a happy number.

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 1220344141 - 229 = 683473229 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 (1220344241) 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, 543190 + ... + 545431.

It is an arithmetic number, because the mean of its divisors is an integer number (163293300).

Almost surely, 21220344141 is an apocalyptic number.

It is an amenable number.

1220344141 is a deficient number, since it is larger than the sum of its proper divisors (86002259).

1220344141 is a wasteful number, since it uses less digits than its factorization.

1220344141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1088699.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 1220344141 is about 34933.4244098686. The cubic root of 1220344141 is about 1068.6301919847.

Adding to 1220344141 its reverse (1414430221), we get a palindrome (2634774362).

The spelling of 1220344141 in words is "one billion, two hundred twenty million, three hundred forty-four thousand, one hundred forty-one".

Divisors: 1 19 59 1121 1088621 20683799 64228639 1220344141