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1387266030 = 232559925733
BaseRepresentation
bin101001010101111…
…1111111111101110
310120200101102020100
41102223333333232
510320120003110
6345353531530
746243365243
oct12253777756
93520342210
101387266030
11652091557
12328713ba6
13191540697
14d23595ca
1581bcbbc0
hex52afffee

1387266030 has 48 divisors (see below), whose sum is σ = 3613053600. Its totient is φ = 369305664.

The previous prime is 1387266017. The next prime is 1387266059. The reversal of 1387266030 is 306627831.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41044 + ... + 66776.

It is an arithmetic number, because the mean of its divisors is an integer number (75271950).

Almost surely, 21387266030 is an apocalyptic number.

1387266030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1387266030 is an abundant number, since it is smaller than the sum of its proper divisors (2225787570).

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

1387266030 is a wasteful number, since it uses less digits than its factorization.

1387266030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26345 (or 26342 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 1387266030 is about 37246.0203243246. The cubic root of 1387266030 is about 1115.2868560206.

The spelling of 1387266030 in words is "one billion, three hundred eighty-seven million, two hundred sixty-six thousand, thirty".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 599 1198 1797 2995 3594 5391 5990 8985 10782 17970 25733 26955 51466 53910 77199 128665 154398 231597 257330 385995 463194 771990 1157985 2315970 15414067 30828134 46242201 77070335 92484402 138726603 154140670 231211005 277453206 462422010 693633015 1387266030