Search a number
-
+
389388652896 = 25310913717811
BaseRepresentation
bin1011010101010010101…
…11110101000101100000
31101020002011110002022010
411222221113311011200
522334431443343041
6454514354112520
740063261636665
oct5525127650540
91336064402263
10389388652896
1114015881a251
126357157b740
132a9470b1529
1414bbcb81a6c
15a1e002aa16
hex5aa95f5160

389388652896 has 48 divisors (see below), whose sum is σ = 1023082377408. Its totient is φ = 129677212800.

The previous prime is 389388652859. The next prime is 389388652907. The reversal of 389388652896 is 698256883983.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1754170 + ... + 1963641.

It is an arithmetic number, because the mean of its divisors is an integer number (21314216196).

Almost surely, 2389388652896 is an apocalyptic number.

It is an amenable number.

389388652896 is an abundant number, since it is smaller than the sum of its proper divisors (633693724512).

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

389388652896 is a wasteful number, since it uses less digits than its factorization.

389388652896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3718915 (or 3718907 counting only the distinct ones).

The product of its digits is 1074954240, while the sum is 75.

The spelling of 389388652896 in words is "three hundred eighty-nine billion, three hundred eighty-eight million, six hundred fifty-two thousand, eight hundred ninety-six".

Divisors: 1 2 3 4 6 8 12 16 24 32 48 96 1091 2182 3273 4364 6546 8728 13092 17456 26184 34912 52368 104736 3717811 7435622 11153433 14871244 22306866 29742488 44613732 59484976 89227464 118969952 178454928 356909856 4056131801 8112263602 12168395403 16224527204 24336790806 32449054408 48673581612 64898108816 97347163224 129796217632 194694326448 389388652896