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80553984 = 211371873
BaseRepresentation
bin1001100110100…
…10100000000000
312121120120021220
410303102200000
5131110211414
611554315040
71665461160
oct463224000
9177516256
1080553984
114151a445
1222b88a80
13138c55a4
14a9ac5a0
157112ca9
hex4cd2800

80553984 has 96 divisors (see below), whose sum is σ = 245568960. Its totient is φ = 23003136.

The previous prime is 80553983. The next prime is 80553997. The reversal of 80553984 is 48935508.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (80553983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42072 + ... + 43944.

It is an arithmetic number, because the mean of its divisors is an integer number (2558010).

Almost surely, 280553984 is an apocalyptic number.

80553984 is a gapful number since it is divisible by the number (84) 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 80553984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122784480).

80553984 is an abundant number, since it is smaller than the sum of its proper divisors (165014976).

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

80553984 is a wasteful number, since it uses less digits than its factorization.

80553984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1905 (or 1885 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 42.

The square root of 80553984 is about 8975.1871289684. The cubic root of 80553984 is about 431.8792529476.

The spelling of 80553984 in words is "eighty million, five hundred fifty-three thousand, nine hundred eighty-four".

Divisors: 1 2 3 4 6 7 8 12 14 16 21 24 28 32 42 48 56 64 84 96 112 128 168 192 224 256 336 384 448 512 672 768 896 1024 1344 1536 1792 1873 2048 2688 3072 3584 3746 5376 5619 6144 7168 7492 10752 11238 13111 14336 14984 21504 22476 26222 29968 39333 43008 44952 52444 59936 78666 89904 104888 119872 157332 179808 209776 239744 314664 359616 419552 479488 629328 719232 839104 958976 1258656 1438464 1678208 1917952 2517312 2876928 3356416 3835904 5034624 5753856 6712832 10069248 11507712 13425664 20138496 26851328 40276992 80553984