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238820516 = 221119328123
BaseRepresentation
bin11100011110000…
…01110010100100
3121122101100011022
432033001302210
5442114224031
635410430312
75626640504
oct1617016244
9548340138
10238820516
11112898430
1267b92398
133a62a01c
1423a09a04
1515e7697b
hexe3c1ca4

238820516 has 24 divisors (see below), whose sum is σ = 458308704. Its totient is φ = 107988480.

The previous prime is 238820513. The next prime is 238820563. The reversal of 238820516 is 615028832.

It is a super-3 number, since 3×2388205163 (a number of 26 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (238820513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5570 + ... + 22553.

It is an arithmetic number, because the mean of its divisors is an integer number (19096196).

Almost surely, 2238820516 is an apocalyptic number.

It is an amenable number.

238820516 is a deficient number, since it is larger than the sum of its proper divisors (219488188).

238820516 is a wasteful number, since it uses less digits than its factorization.

238820516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28331 (or 28329 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 238820516 is about 15453.8188160726. The cubic root of 238820516 is about 620.4267925077.

The spelling of 238820516 in words is "two hundred thirty-eight million, eight hundred twenty thousand, five hundred sixteen".

Divisors: 1 2 4 11 22 44 193 386 772 2123 4246 8492 28123 56246 112492 309353 618706 1237412 5427739 10855478 21710956 59705129 119410258 238820516