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2052211380 = 2235199171877
BaseRepresentation
bin111101001010010…
…0100001010110100
312022000121010202220
41322110210022310
513200331231010
6535350002340
7101566336362
oct17224441264
95260533686
102052211380
1196346886a
124933463b0
1326922817b
141567aa632
15c0277970
hex7a5242b4

2052211380 has 48 divisors (see below), whose sum is σ = 5775100800. Its totient is φ = 544503168.

The previous prime is 2052211379. The next prime is 2052211387. The reversal of 2052211380 is 831122502.

It is a self number, because there is not a number n which added to its sum of digits gives 2052211380.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2052211387) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73999 + ... + 97878.

It is an arithmetic number, because the mean of its divisors is an integer number (120314600).

Almost surely, 22052211380 is an apocalyptic number.

2052211380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2052211380 is an abundant number, since it is smaller than the sum of its proper divisors (3722889420).

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

2052211380 is a wasteful number, since it uses less digits than its factorization.

2052211380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172088 (or 172086 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 2052211380 is about 45301.3397152888. The cubic root of 2052211380 is about 1270.7907077154.

Adding to 2052211380 its reverse (831122502), we get a palindrome (2883333882).

The spelling of 2052211380 in words is "two billion, fifty-two million, two hundred eleven thousand, three hundred eighty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 199 398 597 796 995 1194 1990 2388 2985 3980 5970 11940 171877 343754 515631 687508 859385 1031262 1718770 2062524 2578155 3437540 5156310 10312620 34203523 68407046 102610569 136814092 171017615 205221138 342035230 410442276 513052845 684070460 1026105690 2052211380