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68828833 = 211326203
BaseRepresentation
bin1000001101000…
…11111010100001
311210111212102001
410012203322201
5120110010313
610455124001
71464015103
oct406437241
9153455361
1068828833
1135941137
121b073601
131134b728
1491d9573
156098add
hex41a3ea1

68828833 has 4 divisors (see below), whose sum is σ = 69155248. Its totient is φ = 68502420.

The previous prime is 68828831. The next prime is 68828839. The reversal of 68828833 is 33882886.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 33882886 = 216941443.

It is a cyclic number.

It is not a de Polignac number, because 68828833 - 21 = 68828831 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68828831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162891 + ... + 163312.

It is an arithmetic number, because the mean of its divisors is an integer number (17288812).

Almost surely, 268828833 is an apocalyptic number.

It is an amenable number.

68828833 is a deficient number, since it is larger than the sum of its proper divisors (326415).

68828833 is a wasteful number, since it uses less digits than its factorization.

68828833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326414.

The product of its digits is 442368, while the sum is 46.

The square root of 68828833 is about 8296.3144226819. The cubic root of 68828833 is about 409.8171562263.

It can be divided in two parts, 6882883 and 3, that added together give a palindrome (6882886).

The spelling of 68828833 in words is "sixty-eight million, eight hundred twenty-eight thousand, eight hundred thirty-three".

Divisors: 1 211 326203 68828833