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2137898280 = 233572545117
BaseRepresentation
bin111111101101101…
…1011110100101000
312111222211111002210
41333123123310220
513334300221110
6552050325120
7103656556410
oct17733336450
95458744083
102137898280
119a7873691
124b7b897a0
13280bc9b8b
14163d13640
15c7a51520
hex7f6dbd28

2137898280 has 64 divisors (see below), whose sum is σ = 7329939840. Its totient is φ = 488662272.

The previous prime is 2137898251. The next prime is 2137898303. The reversal of 2137898280 is 828987312.

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, 1271719 + ... + 1273398.

It is an arithmetic number, because the mean of its divisors is an integer number (114530310).

Almost surely, 22137898280 is an apocalyptic number.

2137898280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2137898280 is an abundant number, since it is smaller than the sum of its proper divisors (5192041560).

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

2137898280 is a wasteful number, since it uses less digits than its factorization.

2137898280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2545138 (or 2545134 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 48.

The square root of 2137898280 is about 46237.4121248151. The cubic root of 2137898280 is about 1288.2367352232.

The spelling of 2137898280 in words is "two billion, one hundred thirty-seven million, eight hundred ninety-eight thousand, two hundred eighty".

Divisors: 1 2 3 4 5 6 7 8 10 12 14 15 20 21 24 28 30 35 40 42 56 60 70 84 105 120 140 168 210 280 420 840 2545117 5090234 7635351 10180468 12725585 15270702 17815819 20360936 25451170 30541404 35631638 38176755 50902340 53447457 61082808 71263276 76353510 89079095 101804680 106894914 142526552 152707020 178158190 213789828 267237285 305414040 356316380 427579656 534474570 712632760 1068949140 2137898280