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678010431 = 37145922129
BaseRepresentation
bin101000011010011…
…001111000111111
31202020210111110110
4220122121320333
52342032313211
6151140041103
722541664540
oct5032317077
91666714413
10678010431
113187a02aa
1216b093193
13aa610507
14660924c7
153e7cbea6
hex28699e3f

678010431 has 16 divisors (see below), whose sum is σ = 1033913600. Its totient is φ = 387151488.

The previous prime is 678010429. The next prime is 678010457. The reversal of 678010431 is 134010876.

It is a happy number.

It is not a de Polignac number, because 678010431 - 21 = 678010429 is a prime.

It is a super-2 number, since 2×6780104312 = 919396289089611522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678010471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19575 + ... + 41703.

It is an arithmetic number, because the mean of its divisors is an integer number (64619600).

Almost surely, 2678010431 is an apocalyptic number.

678010431 is a deficient number, since it is larger than the sum of its proper divisors (355903169).

678010431 is a wasteful number, since it uses less digits than its factorization.

678010431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23598.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 678010431 is about 26038.6334318835. The cubic root of 678010431 is about 878.5074695836.

The spelling of 678010431 in words is "six hundred seventy-eight million, ten thousand, four hundred thirty-one".

Divisors: 1 3 7 21 1459 4377 10213 22129 30639 66387 154903 464709 32286211 96858633 226003477 678010431