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389496930 = 23589145879
BaseRepresentation
bin10111001101110…
…100000001100010
31000010220111100020
4113031310001202
51244202400210
6102352134310
712436445364
oct2715640142
91003814306
10389496930
1118a951899
12aa537396
1362904a74
1439a2cd34
15242db770
hex17374062

389496930 has 32 divisors (see below), whose sum is σ = 945302400. Its totient is φ = 102698112.

The previous prime is 389496907. The next prime is 389496931. The reversal of 389496930 is 39694983.

It is not an unprimeable number, because it can be changed into a prime (389496931) 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 15 ways as a sum of consecutive naturals, for example, 70270 + ... + 75609.

It is an arithmetic number, because the mean of its divisors is an integer number (29540700).

Almost surely, 2389496930 is an apocalyptic number.

389496930 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

389496930 is an abundant number, since it is smaller than the sum of its proper divisors (555805470).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

389496930 is a wasteful number, since it uses less digits than its factorization.

389496930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145978.

The product of its (nonzero) digits is 1259712, while the sum is 51.

The square root of 389496930 is about 19735.6765782174. The cubic root of 389496930 is about 730.3000767949.

The spelling of 389496930 in words is "three hundred eighty-nine million, four hundred ninety-six thousand, nine hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 89 178 267 445 534 890 1335 2670 145879 291758 437637 729395 875274 1458790 2188185 4376370 12983231 25966462 38949693 64916155 77899386 129832310 194748465 389496930