Search a number
-
+
43286881 = 1131612081
BaseRepresentation
bin1010010100100…
…0000101100001
310000110012102211
42211020011201
542040140011
64143442121
71033634551
oct245100541
9100405384
1043286881
1122486090
12125b6341
138c77951
145a6b161
153c00b21
hex2948161

43286881 has 16 divisors (see below), whose sum is σ = 49568256. Its totient is φ = 37440000.

The previous prime is 43286863. The next prime is 43286899. The reversal of 43286881 is 18868234.

It is an interprime number because it is at equal distance from previous prime (43286863) and next prime (43286899).

It is a 4-Lehmer number, since φ(43286881) divides (43286881-1)4.

It is a cyclic number.

It is a Carmichael number.

It is not a de Polignac number, because 43286881 - 223 = 34898273 is a prime.

It is a super-2 number, since 2×432868812 = 3747508133416322, which contains 22 as substring.

It is a deceptive number, since it divides R43286880.

It is not an unprimeable number, because it can be changed into a prime (43286801) 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, 19761 + ... + 21841.

It is an arithmetic number, because the mean of its divisors is an integer number (3098016).

It is a Poulet number, since it divides 243286880-1.

Almost surely, 243286881 is an apocalyptic number.

It is an amenable number.

43286881 is a deficient number, since it is larger than the sum of its proper divisors (6281375).

43286881 is a wasteful number, since it uses less digits than its factorization.

43286881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2184.

The product of its digits is 73728, while the sum is 40.

The square root of 43286881 is about 6579.2766319710. The cubic root of 43286881 is about 351.1171947626.

The spelling of 43286881 in words is "forty-three million, two hundred eighty-six thousand, eight hundred eighty-one".

Divisors: 1 11 31 61 341 671 1891 2081 20801 22891 64511 126941 709621 1396351 3935171 43286881