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78568023 = 3231138667
BaseRepresentation
bin1001010111011…
…01101001010111
312110211200001210
410223231221113
5130103134043
611443552503
71642550202
oct453555127
9173750053
1078568023
1140393356
122238b733
131337b671
14a612939
156d6e633
hex4aeda57

78568023 has 8 divisors (see below), whose sum is σ = 109312128. Its totient is φ = 50101304.

The previous prime is 78567991. The next prime is 78568027. The reversal of 78568023 is 32086587.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78568023 - 25 = 78567991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78568027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 569265 + ... + 569402.

It is an arithmetic number, because the mean of its divisors is an integer number (13664016).

Almost surely, 278568023 is an apocalyptic number.

78568023 is a deficient number, since it is larger than the sum of its proper divisors (30744105).

78568023 is a wasteful number, since it uses less digits than its factorization.

78568023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1138693.

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 78568023 is about 8863.8605020612. The cubic root of 78568023 is about 428.3005266231.

The spelling of 78568023 in words is "seventy-eight million, five hundred sixty-eight thousand, twenty-three".

Divisors: 1 3 23 69 1138667 3416001 26189341 78568023