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238880380 = 22559202441
BaseRepresentation
bin11100011110100…
…00011001111100
3121122111101021111
432033100121330
5442123133010
635412011404
75630310154
oct1617203174
9548441244
10238880380
11112929402
1268000b64
133a64b34b
1423a23764
1515e8958a
hexe3d067c

238880380 has 24 divisors (see below), whose sum is σ = 510153840. Its totient is φ = 93932160.

The previous prime is 238880377. The next prime is 238880387. The reversal of 238880380 is 83088832.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238880387) 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, 100041 + ... + 102400.

It is an arithmetic number, because the mean of its divisors is an integer number (21256410).

Almost surely, 2238880380 is an apocalyptic number.

238880380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

238880380 is an abundant number, since it is smaller than the sum of its proper divisors (271273460).

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

238880380 is a wasteful number, since it uses less digits than its factorization.

238880380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202509 (or 202507 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 40.

The square root of 238880380 is about 15455.7555622493. The cubic root of 238880380 is about 620.4786279854.

The spelling of 238880380 in words is "two hundred thirty-eight million, eight hundred eighty thousand, three hundred eighty".

Divisors: 1 2 4 5 10 20 59 118 236 295 590 1180 202441 404882 809764 1012205 2024410 4048820 11944019 23888038 47776076 59720095 119440190 238880380