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238940 = 22513919
BaseRepresentation
bin111010010101011100
3110010202122
4322111130
530121230
65042112
72013422
oct722534
9403678
10238940
11153579
12b6338
13849b0
1463112
154abe5
hex3a55c

238940 has 24 divisors (see below), whose sum is σ = 540960. Its totient is φ = 88128.

The previous prime is 238939. The next prime is 238943. The reversal of 238940 is 49832.

238940 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 200 + ... + 719.

It is an arithmetic number, because the mean of its divisors is an integer number (22540).

2238940 is an apocalyptic number.

238940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

238940 is an abundant number, since it is smaller than the sum of its proper divisors (302020).

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

238940 is a wasteful number, since it uses less digits than its factorization.

238940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941 (or 939 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 238940 is about 488.8148933901. The cubic root of 238940 is about 62.0530243580.

The spelling of 238940 in words is "two hundred thirty-eight thousand, nine hundred forty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 260 919 1838 3676 4595 9190 11947 18380 23894 47788 59735 119470 238940