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2140011220 = 225313451631
BaseRepresentation
bin111111110001101…
…1111101011010100
312112010210211111211
41333203133223110
513340320324340
6552203511204
7104013536524
oct17743375324
95463724454
102140011220
119a8a87116
124b8828504
13281489839
14164303684
15c7d1c5ea
hex7f8dfad4

2140011220 has 24 divisors (see below), whose sum is σ = 4638993408. Its totient is φ = 828391200.

The previous prime is 2140011199. The next prime is 2140011233. The reversal of 2140011220 is 221100412.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2140011220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1725196 + ... + 1726435.

It is an arithmetic number, because the mean of its divisors is an integer number (193291392).

Almost surely, 22140011220 is an apocalyptic number.

2140011220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2140011220 is an abundant number, since it is smaller than the sum of its proper divisors (2498982188).

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

2140011220 is a wasteful number, since it uses less digits than its factorization.

2140011220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3451671 (or 3451669 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 2140011220 is about 46260.2552954477. The cubic root of 2140011220 is about 1288.6609946801.

Adding to 2140011220 its reverse (221100412), we get a palindrome (2361111632).

The spelling of 2140011220 in words is "two billion, one hundred forty million, eleven thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 31 62 124 155 310 620 3451631 6903262 13806524 17258155 34516310 69032620 107000561 214001122 428002244 535002805 1070005610 2140011220