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1338248071 = 1979891571
BaseRepresentation
bin100111111000100…
…0000101110000111
310110021011001020101
41033301000232013
510220042414241
6340443144531
745106630606
oct11761005607
93407131211
101338248071
11627451646
12314215147
1318433a284
14c9a39a3d
157c747e31
hex4fc40b87

1338248071 has 8 divisors (see below), whose sum is σ = 1426515200. Its totient is φ = 1251764280.

The previous prime is 1338248069. The next prime is 1338248101. The reversal of 1338248071 is 1708428331.

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

It is a cyclic number.

It is not a de Polignac number, because 1338248071 - 21 = 1338248069 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1338248071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1338248011) 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, 444285 + ... + 447286.

It is an arithmetic number, because the mean of its divisors is an integer number (178314400).

Almost surely, 21338248071 is an apocalyptic number.

1338248071 is a deficient number, since it is larger than the sum of its proper divisors (88267129).

1338248071 is an equidigital number, since it uses as much as digits as its factorization.

1338248071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 891669.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 1338248071 is about 36582.0730823172. The cubic root of 1338248071 is about 1101.9931002760.

It can be divided in two parts, 13382480 and 71, that added together give a triangular number (13382551 = T5173).

The spelling of 1338248071 in words is "one billion, three hundred thirty-eight million, two hundred forty-eight thousand, seventy-one".

Divisors: 1 19 79 1501 891571 16939849 70434109 1338248071