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320388539406 = 23132315965029
BaseRepresentation
bin1001010100110001010…
…01010010010000001110
31010121222102120010212020
410222120221102100032
520222123431230111
6403103502151010
732101345436235
oct4523051222016
91117872503766
10320388539406
1111396aa83771
1252115582466
132429bb64500
1411714c87b1c
1585025c7906
hex4a98a5240e

320388539406 has 24 divisors (see below), whose sum is σ = 693859205880. Its totient is φ = 98581088736.

The previous prime is 320388539347. The next prime is 320388539413. The reversal of 320388539406 is 604935883023.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 157981501 + ... + 157983528.

It is an arithmetic number, because the mean of its divisors is an integer number (28910800245).

Almost surely, 2320388539406 is an apocalyptic number.

320388539406 is an abundant number, since it is smaller than the sum of its proper divisors (373470666474).

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

320388539406 is a wasteful number, since it uses less digits than its factorization.

320388539406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315965060 (or 315965047 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 51.

The spelling of 320388539406 in words is "three hundred twenty billion, three hundred eighty-eight million, five hundred thirty-nine thousand, four hundred six".

Divisors: 1 2 3 6 13 26 39 78 169 338 507 1014 315965029 631930058 947895087 1895790174 4107545377 8215090754 12322636131 24645272262 53398089901 106796179802 160194269703 320388539406