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385396590 = 23517097517
BaseRepresentation
bin10110111110001…
…010111101101110
3222212012011201210
4112332022331232
51242130142330
6102124215250
712356550135
oct2676127556
9885164653
10385396590
11188601187
12a909a526
1361aca627
143928291c
1523c7b8b0
hex16f8af6e

385396590 has 32 divisors (see below), whose sum is σ = 925616160. Its totient is φ = 102698624.

The previous prime is 385396577. The next prime is 385396607. The reversal of 385396590 is 95693583.

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 15 ways as a sum of consecutive naturals, for example, 47512 + ... + 55028.

It is an arithmetic number, because the mean of its divisors is an integer number (28925505).

Almost surely, 2385396590 is an apocalyptic number.

385396590 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

385396590 is an abundant number, since it is smaller than the sum of its proper divisors (540219570).

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

385396590 is a wasteful number, since it uses less digits than its factorization.

385396590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9236.

The product of its (nonzero) digits is 874800, while the sum is 48.

The square root of 385396590 is about 19631.5203181007. The cubic root of 385396590 is about 727.7283420160.

The spelling of 385396590 in words is "three hundred eighty-five million, three hundred ninety-six thousand, five hundred ninety".

Divisors: 1 2 3 5 6 10 15 30 1709 3418 5127 7517 8545 10254 15034 17090 22551 25635 37585 45102 51270 75170 112755 225510 12846553 25693106 38539659 64232765 77079318 128465530 192698295 385396590