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248128741 = 771499253
BaseRepresentation
bin11101100101000…
…10010011100101
3122021220020122101
432302202103211
51002010104431
640342132101
76102026260
oct1662422345
9567806571
10248128741
11118075883
126b121031
133c538a53
1424d4dcd7
1516bb4961
hexeca24e5

248128741 has 8 divisors (see below), whose sum is σ = 287570304. Its totient is φ = 209685840.

The previous prime is 248128729. The next prime is 248128747. The reversal of 248128741 is 147821842.

It is a happy number.

248128741 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 248128741 - 25 = 248128709 is a prime.

It is a super-2 number, since 2×2481287412 = 123135744220490162, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 248128741.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (248128747) 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, 249130 + ... + 250123.

It is an arithmetic number, because the mean of its divisors is an integer number (35946288).

Almost surely, 2248128741 is an apocalyptic number.

It is an amenable number.

248128741 is a deficient number, since it is larger than the sum of its proper divisors (39441563).

248128741 is an equidigital number, since it uses as much as digits as its factorization.

248128741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499331.

The product of its digits is 28672, while the sum is 37.

The square root of 248128741 is about 15752.1027485222. The cubic root of 248128741 is about 628.3848279314.

The spelling of 248128741 in words is "two hundred forty-eight million, one hundred twenty-eight thousand, seven hundred forty-one".

Divisors: 1 7 71 497 499253 3494771 35446963 248128741