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1220344130 = 25122034413
BaseRepresentation
bin100100010111100…
…1111100101000010
310011001021220102202
41020233033211002
54444402003010
6321032113202
742145516415
oct11057174502
93131256382
101220344130
11576941675
122a0835802
13165a98425
14b8107b7c
15722086a5
hex48bcf942

1220344130 has 8 divisors (see below), whose sum is σ = 2196619452. Its totient is φ = 488137648.

The previous prime is 1220344117. The next prime is 1220344159. The reversal of 1220344130 is 314430221.

It can be written as a sum of positive squares in 2 ways, for example, as 1116161281 + 104182849 = 33409^2 + 10207^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61017197 + ... + 61017216.

Almost surely, 21220344130 is an apocalyptic number.

1220344130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220344130 is a deficient number, since it is larger than the sum of its proper divisors (976275322).

1220344130 is a wasteful number, since it uses less digits than its factorization.

1220344130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122034420.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1220344130 is about 34933.4242524262. The cubic root of 1220344130 is about 1068.6301887738.

Adding to 1220344130 its reverse (314430221), we get a palindrome (1534774351).

The spelling of 1220344130 in words is "one billion, two hundred twenty million, three hundred forty-four thousand, one hundred thirty".

Divisors: 1 2 5 10 122034413 244068826 610172065 1220344130