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2750211990 = 232579386809
BaseRepresentation
bin1010001111101100…
…1110011110010110
321002200000020121100
42203323032132112
521113023240430
61132522330530
7125103262521
oct24373163626
97080006540
102750211990
111191471a79
12649059a46
1334aa17496
141c1383bb8
151116a2960
hexa3ece796

2750211990 has 48 divisors (see below), whose sum is σ = 7241083200. Its totient is φ = 724104576.

The previous prime is 2750211983. The next prime is 2750212033. The reversal of 2750211990 is 991120572.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 186295 + ... + 200514.

It is an arithmetic number, because the mean of its divisors is an integer number (150855900).

Almost surely, 22750211990 is an apocalyptic number.

2750211990 is an abundant number, since it is smaller than the sum of its proper divisors (4490871210).

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

2750211990 is a wasteful number, since it uses less digits than its factorization.

2750211990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386901 (or 386898 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 36.

The square root of 2750211990 is about 52442.4636148989. The cubic root of 2750211990 is about 1401.0556646644.

The spelling of 2750211990 in words is "two billion, seven hundred fifty million, two hundred eleven thousand, nine hundred ninety".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 79 90 158 237 395 474 711 790 1185 1422 2370 3555 7110 386809 773618 1160427 1934045 2320854 3481281 3868090 5802135 6962562 11604270 17406405 30557911 34812810 61115822 91673733 152789555 183347466 275021199 305579110 458368665 550042398 916737330 1375105995 2750211990