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82233865 = 577929741
BaseRepresentation
bin1001110011011…
…00101000001001
312201201220122201
410321230220021
5132022440430
612054320201
72015655610
oct471545011
9181656581
1082233865
114246757a
1223659061
13140630bc
14acc8877
1573458ca
hex4e6ca09

82233865 has 16 divisors (see below), whose sum is σ = 114209280. Its totient is φ = 55673280.

The previous prime is 82233863. The next prime is 82233871. The reversal of 82233865 is 56833228.

It is not a de Polignac number, because 82233865 - 21 = 82233863 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82233863) 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, 12106 + ... + 17635.

It is an arithmetic number, because the mean of its divisors is an integer number (7138080).

Almost surely, 282233865 is an apocalyptic number.

It is an amenable number.

82233865 is a deficient number, since it is larger than the sum of its proper divisors (31975415).

82233865 is a wasteful number, since it uses less digits than its factorization.

82233865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29832.

The product of its digits is 69120, while the sum is 37.

The square root of 82233865 is about 9068.2889786332. The cubic root of 82233865 is about 434.8607736938.

It can be divided in two parts, 822338 and 65, that added together give a triangular number (822403 = T1282).

The spelling of 82233865 in words is "eighty-two million, two hundred thirty-three thousand, eight hundred sixty-five".

Divisors: 1 5 7 35 79 395 553 2765 29741 148705 208187 1040935 2349539 11747695 16446773 82233865