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68230389 = 3166913627
BaseRepresentation
bin1000001000100…
…01110011110101
311202101110111110
410010101303311
5114431333024
610434225233
71455643263
oct404216365
9152343443
1068230389
1135572557
121aa25219
131119c216
1490c1433
155ecb629
hex4111cf5

68230389 has 8 divisors (see below), whose sum is σ = 91035040. Its totient is φ = 45456336.

The previous prime is 68230381. The next prime is 68230423. The reversal of 68230389 is 98303286.

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

It is not a de Polignac number, because 68230389 - 23 = 68230381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68230381) 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, 1807 + ... + 11820.

It is an arithmetic number, because the mean of its divisors is an integer number (11379380).

Almost surely, 268230389 is an apocalyptic number.

It is an amenable number.

68230389 is a deficient number, since it is larger than the sum of its proper divisors (22804651).

68230389 is a wasteful number, since it uses less digits than its factorization.

68230389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15299.

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 68230389 is about 8260.1688239406. The cubic root of 68230389 is about 408.6259554953.

The spelling of 68230389 in words is "sixty-eight million, two hundred thirty thousand, three hundred eighty-nine".

Divisors: 1 3 1669 5007 13627 40881 22743463 68230389