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1214103220 = 2251131178021
BaseRepresentation
bin100100001011101…
…1011111010110100
310010121112211111221
41020113123322310
54441302300340
6320250240124
742041464351
oct11027337264
93117484457
101214103220
115733697a0
1229a726044
131646c1895
14b7361628
15718c444a
hex485dbeb4

1214103220 has 48 divisors (see below), whose sum is σ = 2871138816. Its totient is φ = 427248000.

The previous prime is 1214103197. The next prime is 1214103271. The reversal of 1214103220 is 223014121.

It is a junction number, because it is equal to n+sod(n) for n = 1214103194 and 1214103203.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 82191 + ... + 95830.

It is an arithmetic number, because the mean of its divisors is an integer number (59815392).

Almost surely, 21214103220 is an apocalyptic number.

1214103220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1214103220 is an abundant number, since it is smaller than the sum of its proper divisors (1657035596).

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

1214103220 is a wasteful number, since it uses less digits than its factorization.

1214103220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178072 (or 178070 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1214103220 is about 34843.9839857614. The cubic root of 1214103220 is about 1066.8053958018.

Adding to 1214103220 its reverse (223014121), we get a palindrome (1437117341).

The spelling of 1214103220 in words is "one billion, two hundred fourteen million, one hundred three thousand, two hundred twenty".

Divisors: 1 2 4 5 10 11 20 22 31 44 55 62 110 124 155 220 310 341 620 682 1364 1705 3410 6820 178021 356042 712084 890105 1780210 1958231 3560420 3916462 5518651 7832924 9791155 11037302 19582310 22074604 27593255 39164620 55186510 60705161 110373020 121410322 242820644 303525805 607051610 1214103220