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1220415414 = 231711964857
BaseRepresentation
bin100100010111110…
…0000111110110110
310011001102112012220
41020233200332312
54444411243124
6321033423210
742146234301
oct11057407666
93131375186
101220415414
11576990189
122a086ab06
13165ac19ca
14b8125b38
157221e879
hex48be0fb6

1220415414 has 16 divisors (see below), whose sum is σ = 2584409328. Its totient is φ = 382875392.

The previous prime is 1220415403. The next prime is 1220415419. The reversal of 1220415414 is 4145140221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220415419) 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, 5982327 + ... + 5982530.

It is an arithmetic number, because the mean of its divisors is an integer number (161525583).

Almost surely, 21220415414 is an apocalyptic number.

1220415414 is an abundant number, since it is smaller than the sum of its proper divisors (1363993914).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1220415414 is a wasteful number, since it uses less digits than its factorization.

1220415414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11964879.

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 1220415414 is about 34934.4445211313. Note that the first 3 decimals coincide. The cubic root of 1220415414 is about 1068.6509956783.

Adding to 1220415414 its reverse (4145140221), we get a palindrome (5365555635).

The spelling of 1220415414 in words is "one billion, two hundred twenty million, four hundred fifteen thousand, four hundred fourteen".

Divisors: 1 2 3 6 17 34 51 102 11964857 23929714 35894571 71789142 203402569 406805138 610207707 1220415414