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139130880 = 211357647
BaseRepresentation
bin10000100101011…
…11100000000000
3100200210120200120
420102233200000
5241104142010
621450020240
73306410250
oct1022574000
9320716616
10139130880
11715990a9
123a717680
1322a94885
1414699960
15c333e70
hex84af800

139130880 has 192 divisors, whose sum is σ = 509483520. Its totient is φ = 31752192.

The previous prime is 139130869. The next prime is 139130891. The reversal of 139130880 is 88031931.

It is an interprime number because it is at equal distance from previous prime (139130869) and next prime (139130891).

It is a tau number, because it is divible by the number of its divisors (192).

It is a super-3 number, since 3×1391308803 (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 214717 + ... + 215363.

It is an arithmetic number, because the mean of its divisors is an integer number (2653560).

Almost surely, 2139130880 is an apocalyptic number.

139130880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139130880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (254741760).

139130880 is an abundant number, since it is smaller than the sum of its proper divisors (370352640).

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

139130880 is an equidigital number, since it uses as much as digits as its factorization.

139130880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684 (or 664 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 139130880 is about 11795.3753649471. The cubic root of 139130880 is about 518.1726788729.

The spelling of 139130880 in words is "one hundred thirty-nine million, one hundred thirty thousand, eight hundred eighty".