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389680914 = 2379278117
BaseRepresentation
bin10111001110100…
…000111100010010
31000011020211201110
4113032200330102
51244224242124
6102400114150
712441142650
oct2716407422
91004224643
10389680914
1118aa68047
12aa605956
136296a72c
1439a79dd0
1524326029
hex173a0f12

389680914 has 16 divisors (see below), whose sum is σ = 890699328. Its totient is φ = 111337392.

The previous prime is 389680909. The next prime is 389680939. The reversal of 389680914 is 419086983.

It is a Curzon number.

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, 4639017 + ... + 4639100.

It is an arithmetic number, because the mean of its divisors is an integer number (55668708).

Almost surely, 2389680914 is an apocalyptic number.

389680914 is an abundant number, since it is smaller than the sum of its proper divisors (501018414).

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

389680914 is a wasteful number, since it uses less digits than its factorization.

389680914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9278129.

The product of its (nonzero) digits is 373248, while the sum is 48.

The square root of 389680914 is about 19740.3372311620. The cubic root of 389680914 is about 730.4150476444.

The spelling of 389680914 in words is "three hundred eighty-nine million, six hundred eighty thousand, nine hundred fourteen".

Divisors: 1 2 3 6 7 14 21 42 9278117 18556234 27834351 55668702 64946819 129893638 194840457 389680914