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81414 = 2324523
BaseRepresentation
bin10011111000000110
311010200100
4103320012
510101124
61424530
7456234
oct237006
9133610
1081414
1156193
123b146
132b098
1421954
15191c9
hex13e06

81414 has 12 divisors (see below), whose sum is σ = 176436. Its totient is φ = 27132.

The previous prime is 81409. The next prime is 81421. The reversal of 81414 is 41418.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 4523 = 81414 / (8 + 1 + 4 + 1 + 4).

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 81414.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2244 + ... + 2279.

It is an arithmetic number, because the mean of its divisors is an integer number (14703).

281414 is an apocalyptic number.

81414 is an abundant number, since it is smaller than the sum of its proper divisors (95022).

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

81414 is a wasteful number, since it uses less digits than its factorization.

81414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4531 (or 4528 counting only the distinct ones).

The product of its digits is 128, while the sum is 18.

The square root of 81414 is about 285.3313862862. The cubic root of 81414 is about 43.3410768542.

It can be divided in two parts, 814 and 14, that added together give a palindrome (828).

The spelling of 81414 in words is "eighty-one thousand, four hundred fourteen".

Divisors: 1 2 3 6 9 18 4523 9046 13569 27138 40707 81414