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20068345 = 511364879
BaseRepresentation
bin100110010001…
…1011111111001
31101202120121001
41030203133321
520114141340
61554045001
7332402203
oct114433771
941676531
1020068345
1110367710
126879761
13420857b
142945773
151b6629a
hex13237f9

20068345 has 8 divisors (see below), whose sum is σ = 26271360. Its totient is φ = 14595120.

The previous prime is 20068339. The next prime is 20068361. The reversal of 20068345 is 54386002.

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

It is not a de Polignac number, because 20068345 - 29 = 20067833 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182385 + ... + 182494.

It is an arithmetic number, because the mean of its divisors is an integer number (3283920).

Almost surely, 220068345 is an apocalyptic number.

It is an amenable number.

20068345 is a deficient number, since it is larger than the sum of its proper divisors (6203015).

20068345 is a wasteful number, since it uses less digits than its factorization.

20068345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364895.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 20068345 is about 4479.7706414503. The cubic root of 20068345 is about 271.7506049147.

The spelling of 20068345 in words is "twenty million, sixty-eight thousand, three hundred forty-five".

Divisors: 1 5 11 55 364879 1824395 4013669 20068345