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139381200 = 24325275531
BaseRepresentation
bin10000100111011…
…00100111010000
3100201021022001200
420103230213100
5241140144300
621455231200
73311502120
oct1023544720
9321238050
10139381200
117174a182
123a818500
1322b517aa
1414722c80
15c383200
hex84ec9d0

139381200 has 180 divisors, whose sum is σ = 552890208. Its totient is φ = 31852800.

The previous prime is 139381199. The next prime is 139381211. The reversal of 139381200 is 2183931.

It is a tau number, because it is divible by the number of its divisors (180).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 22435 + ... + 27965.

Almost surely, 2139381200 is an apocalyptic number.

139381200 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 139381200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (276445104).

139381200 is an abundant number, since it is smaller than the sum of its proper divisors (413509008).

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

139381200 is a wasteful number, since it uses less digits than its factorization.

139381200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5562 (or 5548 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 139381200 is about 11805.9815347984. The cubic root of 139381200 is about 518.4832528044.

The spelling of 139381200 in words is "one hundred thirty-nine million, three hundred eighty-one thousand, two hundred".