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238601389 = 13315311171
BaseRepresentation
bin11100011100011…
…00010010101101
3121121222012120111
432032030102231
5442040221024
635402020021
75625035605
oct1616142255
9547865514
10238601389
11112758834
1267aa7611
133a581370
142398dc05
1515e31a94
hexe38c4ad

238601389 has 16 divisors (see below), whose sum is σ = 270273024. Its totient is φ = 209102400.

The previous prime is 238601387. The next prime is 238601399. The reversal of 238601389 is 983106832.

238601389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 238601389 - 21 = 238601387 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238601383) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15774 + ... + 26944.

It is an arithmetic number, because the mean of its divisors is an integer number (16892064).

Almost surely, 2238601389 is an apocalyptic number.

It is an amenable number.

238601389 is a deficient number, since it is larger than the sum of its proper divisors (31671635).

238601389 is a wasteful number, since it uses less digits than its factorization.

238601389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11268.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 238601389 is about 15446.7274527649. The cubic root of 238601389 is about 620.2369793016.

The spelling of 238601389 in words is "two hundred thirty-eight million, six hundred one thousand, three hundred eighty-nine".

Divisors: 1 13 31 53 403 689 1643 11171 21359 145223 346301 592063 4501913 7696819 18353953 238601389