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2142879030 = 233531256019
BaseRepresentation
bin111111110111001…
…1011110100110110
312112100012112102000
41333232123310312
513342034112110
6552345200130
7104050112505
oct17756336466
95470175360
102142879030
119aa665806
124b9790046
13281c51c76
1416484c83c
15c81d71c0
hex7fb9bd36

2142879030 has 64 divisors (see below), whose sum is σ = 5898700800. Its totient is φ = 552998880.

The previous prime is 2142878963. The next prime is 2142879031. The reversal of 2142879030 is 309782412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2142879031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 119640 + ... + 136379.

It is an arithmetic number, because the mean of its divisors is an integer number (92167200).

Almost surely, 22142879030 is an apocalyptic number.

2142879030 is an abundant number, since it is smaller than the sum of its proper divisors (3755821770).

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

2142879030 is a wasteful number, since it uses less digits than its factorization.

2142879030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256066 (or 256060 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 2142879030 is about 46291.2413961864. The cubic root of 2142879030 is about 1289.2363787795.

The spelling of 2142879030 in words is "two billion, one hundred forty-two million, eight hundred seventy-nine thousand, thirty".

Divisors: 1 2 3 5 6 9 10 15 18 27 30 31 45 54 62 90 93 135 155 186 270 279 310 465 558 837 930 1395 1674 2790 4185 8370 256019 512038 768057 1280095 1536114 2304171 2560190 3840285 4608342 6912513 7680570 7936589 11520855 13825026 15873178 23041710 23809767 34562565 39682945 47619534 69125130 71429301 79365890 119048835 142858602 214287903 238097670 357146505 428575806 714293010 1071439515 2142879030