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81434114 = 21719373407
BaseRepresentation
bin1001101101010…
…01011000000010
312200020021121022
410312221120002
5131321342424
612025225442
72006115146
oct466513002
9180207538
1081434114
1141a70723
1223332282
1313b43088
14ab5b226
15723895e
hex4da9602

81434114 has 32 divisors (see below), whose sum is σ = 139864320. Its totient is φ = 35313408.

The previous prime is 81434113. The next prime is 81434137. The reversal of 81434114 is 41143418.

It is not an unprimeable number, because it can be changed into a prime (81434113) 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, 22199 + ... + 25605.

It is an arithmetic number, because the mean of its divisors is an integer number (4370760).

Almost surely, 281434114 is an apocalyptic number.

81434114 is a deficient number, since it is larger than the sum of its proper divisors (58430206).

81434114 is a wasteful number, since it uses less digits than its factorization.

81434114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3482.

The product of its digits is 1536, while the sum is 26.

The square root of 81434114 is about 9024.0852167962. The cubic root of 81434114 is about 433.4464581708.

The spelling of 81434114 in words is "eighty-one million, four hundred thirty-four thousand, one hundred fourteen".

Divisors: 1 2 17 19 34 37 38 74 323 629 646 703 1258 1406 3407 6814 11951 23902 57919 64733 115838 126059 129466 252118 1100461 2143003 2200922 2395121 4286006 4790242 40717057 81434114