Search a number
-
+
238227380 = 22511911369
BaseRepresentation
bin11100011001100…
…00111110110100
3121121021012112022
432030300332310
5441441234010
635350012312
75621620316
oct1614607664
9547235468
10238227380
11112522836
1267947098
133a480061
14238d37b6
1515daad55
hexe330fb4

238227380 has 12 divisors (see below), whose sum is σ = 500277540. Its totient is φ = 95290944.

The previous prime is 238227359. The next prime is 238227383. The reversal of 238227380 is 83722832.

It can be written as a sum of positive squares in 2 ways, for example, as 75307684 + 162919696 = 8678^2 + 12764^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 238227380.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238227383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5955665 + ... + 5955704.

It is an arithmetic number, because the mean of its divisors is an integer number (41689795).

Almost surely, 2238227380 is an apocalyptic number.

238227380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

238227380 is an abundant number, since it is smaller than the sum of its proper divisors (262050160).

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

238227380 is a wasteful number, since it uses less digits than its factorization.

238227380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11911378 (or 11911376 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 238227380 is about 15434.6162893672. The cubic root of 238227380 is about 619.9127348564.

The spelling of 238227380 in words is "two hundred thirty-eight million, two hundred twenty-seven thousand, three hundred eighty".

Divisors: 1 2 4 5 10 20 11911369 23822738 47645476 59556845 119113690 238227380