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82054480 = 24547139157
BaseRepresentation
bin1001110010000…
…00110101010000
312201101210120211
410321000311100
5132001220410
612050413504
72014310614
oct471006520
9181353524
1082054480
1142354822
1223591294
1313ccc561
14ac7d344
15730c68a
hex4e40d50

82054480 has 80 divisors (see below), whose sum is σ = 197487360. Its totient is φ = 31689216.

The previous prime is 82054463. The next prime is 82054507. The reversal of 82054480 is 8445028.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 522562 + ... + 522718.

It is an arithmetic number, because the mean of its divisors is an integer number (2468592).

Almost surely, 282054480 is an apocalyptic number.

82054480 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 82054480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98743680).

82054480 is an abundant number, since it is smaller than the sum of its proper divisors (115432880).

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

82054480 is a wasteful number, since it uses less digits than its factorization.

82054480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356 (or 350 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 31.

The square root of 82054480 is about 9058.3927934264. The cubic root of 82054480 is about 434.5443416472.

The spelling of 82054480 in words is "eighty-two million, fifty-four thousand, four hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 40 47 80 94 139 157 188 235 278 314 376 470 556 628 695 752 785 940 1112 1256 1390 1570 1880 2224 2512 2780 3140 3760 5560 6280 6533 7379 11120 12560 13066 14758 21823 26132 29516 32665 36895 43646 52264 59032 65330 73790 87292 104528 109115 118064 130660 147580 174584 218230 261320 295160 349168 436460 522640 590320 872920 1025681 1745840 2051362 4102724 5128405 8205448 10256810 16410896 20513620 41027240 82054480