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2640211480 = 23566005287
BaseRepresentation
bin1001110101011110…
…0110111000011000
320211000000122021101
42131113212320120
520401343231410
61113552521144
7122266266364
oct23527467030
96730018241
102640211480
11113536aa65
126182501b4
13330cb1b1a
141b090c2a4
15106bc4d3a
hex9d5e6e18

2640211480 has 16 divisors (see below), whose sum is σ = 5940475920. Its totient is φ = 1056084576.

The previous prime is 2640211477. The next prime is 2640211489. The reversal of 2640211480 is 841120462.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2640211489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33002604 + ... + 33002683.

It is an arithmetic number, because the mean of its divisors is an integer number (371279745).

Almost surely, 22640211480 is an apocalyptic number.

2640211480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2640211480 is an abundant number, since it is smaller than the sum of its proper divisors (3300264440).

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

2640211480 is a wasteful number, since it uses less digits than its factorization.

2640211480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66005298 (or 66005294 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 2640211480 is about 51382.9882354073. The cubic root of 2640211480 is about 1382.1215494690.

The spelling of 2640211480 in words is "two billion, six hundred forty million, two hundred eleven thousand, four hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 66005287 132010574 264021148 330026435 528042296 660052870 1320105740 2640211480