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2231542488 = 233713282991
BaseRepresentation
bin1000010100000010…
…1010001011011000
312202112001002210210
42011000222023120
514032233324423
61005233411120
7106204540530
oct20500521330
95675032723
102231542488
11a4571399a
12523409aa0
13297426756
1417252c4c0
15d0d9cb93
hex8502a2d8

2231542488 has 32 divisors (see below), whose sum is σ = 6375836160. Its totient is φ = 637583520.

The previous prime is 2231542487. The next prime is 2231542499. The reversal of 2231542488 is 8842451322.

It is a super-3 number, since 3×22315424883 (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231542487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6641328 + ... + 6641663.

It is an arithmetic number, because the mean of its divisors is an integer number (199244880).

Almost surely, 22231542488 is an apocalyptic number.

2231542488 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2231542488 is an abundant number, since it is smaller than the sum of its proper divisors (4144293672).

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

2231542488 is a wasteful number, since it uses less digits than its factorization.

2231542488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13283007 (or 13283003 counting only the distinct ones).

The product of its digits is 122880, while the sum is 39.

The square root of 2231542488 is about 47239.2049890766. The cubic root of 2231542488 is about 1306.7777161046. Note that the first 4 decimals are identical.

The spelling of 2231542488 in words is "two billion, two hundred thirty-one million, five hundred forty-two thousand, four hundred eighty-eight".

Divisors: 1 2 3 4 6 7 8 12 14 21 24 28 42 56 84 168 13282991 26565982 39848973 53131964 79697946 92980937 106263928 159395892 185961874 278942811 318791784 371923748 557885622 743847496 1115771244 2231542488