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2152193490 = 234523115523
BaseRepresentation
bin1000000001000111…
…1101110111010010
312112222201202110000
42000101331313102
513401430142430
6553320550430
7104222225406
oct20021756722
95488652400
102152193490
11a04947907
12500922416
13283b63795
14165b95106
15c8e26e60
hex8047ddd2

2152193490 has 80 divisors (see below), whose sum is σ = 6038670528. Its totient is φ = 548960544.

The previous prime is 2152193453. The next prime is 2152193509. The reversal of 2152193490 is 943912512.

2152193490 is a `hidden beast` number, since 2 + 1 + 521 + 93 + 49 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 39132 + ... + 76391.

Almost surely, 22152193490 is an apocalyptic number.

2152193490 is an abundant number, since it is smaller than the sum of its proper divisors (3886477038).

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

2152193490 is a wasteful number, since it uses less digits than its factorization.

2152193490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115565 (or 115556 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 2152193490 is about 46391.7394586579. The cubic root of 2152193490 is about 1291.1016549211.

The spelling of 2152193490 in words is "two billion, one hundred fifty-two million, one hundred ninety-three thousand, four hundred ninety".

Divisors: 1 2 3 5 6 9 10 15 18 23 27 30 45 46 54 69 81 90 115 135 138 162 207 230 270 345 405 414 621 690 810 1035 1242 1863 2070 3105 3726 6210 9315 18630 115523 231046 346569 577615 693138 1039707 1155230 1732845 2079414 2657029 3119121 3465690 5198535 5314058 6238242 7971087 9357363 10397070 13285145 15595605 15942174 18714726 23913261 26570290 31191210 39855435 46786815 47826522 71739783 79710870 93573630 119566305 143479566 215219349 239132610 358698915 430438698 717397830 1076096745 2152193490