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1389800108 = 221133074779
BaseRepresentation
bin101001011010110…
…1010101010101100
310120212011011100002
41102311222222230
510321242100413
6345524123432
746304051234
oct12265525254
93525134302
101389800108
11653562434
12329536578
13191c19c38
14d2818cc4
158202c958
hex52d6aaac

1389800108 has 12 divisors (see below), whose sum is σ = 2453674440. Its totient is φ = 688750272.

The previous prime is 1389800081. The next prime is 1389800117. The reversal of 1389800108 is 8010089831.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1536938 + ... + 1537841.

It is an arithmetic number, because the mean of its divisors is an integer number (204472870).

Almost surely, 21389800108 is an apocalyptic number.

It is an amenable number.

1389800108 is a deficient number, since it is larger than the sum of its proper divisors (1063874332).

1389800108 is a wasteful number, since it uses less digits than its factorization.

1389800108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3074896 (or 3074894 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 38.

The square root of 1389800108 is about 37280.0229077183. The cubic root of 1389800108 is about 1115.9655301678.

Adding to 1389800108 its reverse (8010089831), we get a palindrome (9399889939).

The spelling of 1389800108 in words is "one billion, three hundred eighty-nine million, eight hundred thousand, one hundred eight".

Divisors: 1 2 4 113 226 452 3074779 6149558 12299116 347450027 694900054 1389800108