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78974103 = 3132024977
BaseRepresentation
bin1001011010100…
…00110010010111
312111121022002210
410231100302113
5130204132403
611500404503
71646161125
oct455206227
9174538083
1078974103
114064045a
1222546733
1313491450
14a6ba915
156deeb03
hex4b50c97

78974103 has 8 divisors (see below), whose sum is σ = 113398768. Its totient is φ = 48599424.

The previous prime is 78974099. The next prime is 78974113. The reversal of 78974103 is 30147987.

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

It is not a de Polignac number, because 78974103 - 22 = 78974099 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 2024977 = 78974103 / (7 + 8 + 9 + 7 + 4 + 1 + 0 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78974113) 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, 1012450 + ... + 1012527.

It is an arithmetic number, because the mean of its divisors is an integer number (14174846).

Almost surely, 278974103 is an apocalyptic number.

78974103 is a deficient number, since it is larger than the sum of its proper divisors (34424665).

78974103 is a wasteful number, since it uses less digits than its factorization.

78974103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2024993.

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 78974103 is about 8886.7374778374. The cubic root of 78974103 is about 429.0371515470.

The spelling of 78974103 in words is "seventy-eight million, nine hundred seventy-four thousand, one hundred three".

Divisors: 1 3 13 39 2024977 6074931 26324701 78974103