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42089816 = 23233147157
BaseRepresentation
bin1010000010001…
…1110101011000
32221012101101002
42200203311120
541233333231
64102044132
71020520556
oct240436530
987171332
1042089816
112183877a
1212119648
138948b22
145838bd6
153a660cb
hex2823d58

42089816 has 64 divisors (see below), whose sum is σ = 87367680. Its totient is φ = 18944640.

The previous prime is 42089813. The next prime is 42089837. The reversal of 42089816 is 61898024.

It is a super-2 number, since 2×420898162 = 3543105221827712, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42089816.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42089813) 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, 268010 + ... + 268166.

It is an arithmetic number, because the mean of its divisors is an integer number (1365120).

Almost surely, 242089816 is an apocalyptic number.

42089816 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

It is an amenable number.

42089816 is an abundant number, since it is smaller than the sum of its proper divisors (45277864).

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

42089816 is a wasteful number, since it uses less digits than its factorization.

42089816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264 (or 260 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 42089816 is about 6487.6664525852. Note that the first 3 decimals coincide. The cubic root of 42089816 is about 347.8502680816.

The spelling of 42089816 in words is "forty-two million, eighty-nine thousand, eight hundred sixteen".

Divisors: 1 2 4 8 23 31 46 47 62 92 94 124 157 184 188 248 314 376 628 713 1081 1256 1426 1457 2162 2852 2914 3611 4324 4867 5704 5828 7222 7379 8648 9734 11656 14444 14758 19468 28888 29516 33511 38936 59032 67022 111941 134044 169717 223882 228749 268088 339434 447764 457498 678868 895528 914996 1357736 1829992 5261227 10522454 21044908 42089816