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124324220 = 22519536173
BaseRepresentation
bin1110110100100…
…00100101111100
322122221022202202
413122100211330
5223311333340
620200411032
73036511166
oct732204574
9278838682
10124324220
11641a5699
1235776a78
131c9ac237
1412723936
15adabc15
hex769097c

124324220 has 48 divisors (see below), whose sum is σ = 280052640. Its totient is φ = 46215936.

The previous prime is 124324219. The next prime is 124324243. The reversal of 124324220 is 22423421.

Adding to 124324220 its reverse (22423421), we get a palindrome (146747641).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 124324192 and 124324201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17054 + ... + 23226.

It is an arithmetic number, because the mean of its divisors is an integer number (5834430).

Almost surely, 2124324220 is an apocalyptic number.

124324220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 124324220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140026320).

124324220 is an abundant number, since it is smaller than the sum of its proper divisors (155728420).

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

124324220 is a wasteful number, since it uses less digits than its factorization.

124324220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6254 (or 6252 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 124324220 is about 11150.0771297781. The cubic root of 124324220 is about 499.0973313593.

The spelling of 124324220 in words is "one hundred twenty-four million, three hundred twenty-four thousand, two hundred twenty".

Divisors: 1 2 4 5 10 19 20 38 53 76 95 106 190 212 265 380 530 1007 1060 2014 4028 5035 6173 10070 12346 20140 24692 30865 61730 117287 123460 234574 327169 469148 586435 654338 1172870 1308676 1635845 2345740 3271690 6216211 6543380 12432422 24864844 31081055 62162110 124324220