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78795213 = 373752153
BaseRepresentation
bin1001011001001…
…01000111001101
312111021012201020
410230211013031
5130132421323
611452504353
71644514440
oct454450715
9174235636
1078795213
1140529012
122247b0b9
131342abb3
14a671657
156db6ae3
hex4b251cd

78795213 has 8 divisors (see below), whose sum is σ = 120068928. Its totient is φ = 45025824.

The previous prime is 78795209. The next prime is 78795229. The reversal of 78795213 is 31259787.

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

It is not a de Polignac number, because 78795213 - 22 = 78795209 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78795203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1876056 + ... + 1876097.

It is an arithmetic number, because the mean of its divisors is an integer number (15008616).

Almost surely, 278795213 is an apocalyptic number.

It is an amenable number.

78795213 is a deficient number, since it is larger than the sum of its proper divisors (41273715).

78795213 is a wasteful number, since it uses less digits than its factorization.

78795213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3752163.

The product of its digits is 105840, while the sum is 42.

The square root of 78795213 is about 8876.6667730630. Note that the first 3 decimals coincide. The cubic root of 78795213 is about 428.7129588594.

The spelling of 78795213 in words is "seventy-eight million, seven hundred ninety-five thousand, two hundred thirteen".

Divisors: 1 3 7 21 3752153 11256459 26265071 78795213