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83088072 = 23331991933
BaseRepresentation
bin1001111001111…
…01001011001000
312210100022102000
410330331023020
5132232304242
612124511000
72026144164
oct474751310
9183308360
1083088072
11429a0331
12239ab460
13142a1b52
14b06bca4
157463a4c
hex4f3d2c8

83088072 has 64 divisors (see below), whose sum is σ = 232080000. Its totient is φ = 27542592.

The previous prime is 83088059. The next prime is 83088073. The reversal of 83088072 is 27088038.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (83088073) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42018 + ... + 43950.

It is an arithmetic number, because the mean of its divisors is an integer number (3626250).

Almost surely, 283088072 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 83088072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116040000).

83088072 is an abundant number, since it is smaller than the sum of its proper divisors (148991928).

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

83088072 is a wasteful number, since it uses less digits than its factorization.

83088072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2147 (or 2137 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 83088072 is about 9115.2658765392. The cubic root of 83088072 is about 436.3613002716.

The spelling of 83088072 in words is "eighty-three million, eighty-eight thousand, seventy-two".

Divisors: 1 2 3 4 6 8 9 12 18 24 27 36 54 72 108 199 216 398 597 796 1194 1592 1791 1933 2388 3582 3866 4776 5373 5799 7164 7732 10746 11598 14328 15464 17397 21492 23196 34794 42984 46392 52191 69588 104382 139176 208764 384667 417528 769334 1154001 1538668 2308002 3077336 3462003 4616004 6924006 9232008 10386009 13848012 20772018 27696024 41544036 83088072