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45581380 = 22513199227
BaseRepresentation
bin1010110111100…
…0010001000100
310011202202220021
42231320101010
543132101010
64304544524
71062302215
oct255702104
9104682807
1045581380
1123802a69
1213322144
13959c140
1460a740c
1540058da
hex2b78444

45581380 has 48 divisors (see below), whose sum is σ = 108521280. Its totient is φ = 15942528.

The previous prime is 45581329. The next prime is 45581383. The reversal of 45581380 is 8318554.

It is not an unprimeable number, because it can be changed into a prime (45581383) 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 15 ways as a sum of consecutive naturals, for example, 327 + ... + 9553.

It is an arithmetic number, because the mean of its divisors is an integer number (2260860).

Almost surely, 245581380 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45581380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54260640).

45581380 is an abundant number, since it is smaller than the sum of its proper divisors (62939900).

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

45581380 is a wasteful number, since it uses less digits than its factorization.

45581380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9268 (or 9266 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 34.

The square root of 45581380 is about 6751.3983736705. The cubic root of 45581380 is about 357.2145634306.

The spelling of 45581380 in words is "forty-five million, five hundred eighty-one thousand, three hundred eighty".

Divisors: 1 2 4 5 10 13 19 20 26 38 52 65 76 95 130 190 247 260 380 494 988 1235 2470 4940 9227 18454 36908 46135 92270 119951 175313 184540 239902 350626 479804 599755 701252 876565 1199510 1753130 2279069 2399020 3506260 4558138 9116276 11395345 22790690 45581380