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389030061 = 3722646463
BaseRepresentation
bin10111001100000…
…010000010101101
31000010000202220210
4113030002002231
51244042430221
6102334133033
712432462300
oct2714020255
91003022823
10389030061
1118a663052
12aa351179
13627a0404
143994ab37
1524248276
hex173020ad

389030061 has 12 divisors (see below), whose sum is σ = 603393792. Its totient is φ = 222302808.

The previous prime is 389030053. The next prime is 389030069. The reversal of 389030061 is 160030983.

It is an interprime number because it is at equal distance from previous prime (389030053) and next prime (389030069).

It is not a de Polignac number, because 389030061 - 23 = 389030053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389030069) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1323085 + ... + 1323378.

It is an arithmetic number, because the mean of its divisors is an integer number (50282816).

Almost surely, 2389030061 is an apocalyptic number.

It is an amenable number.

389030061 is a deficient number, since it is larger than the sum of its proper divisors (214363731).

389030061 is a wasteful number, since it uses less digits than its factorization.

389030061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2646480 (or 2646473 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 389030061 is about 19723.8449851950. The cubic root of 389030061 is about 730.0081696715.

The spelling of 389030061 in words is "three hundred eighty-nine million, thirty thousand, sixty-one".

Divisors: 1 3 7 21 49 147 2646463 7939389 18525241 55575723 129676687 389030061