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139129200 = 24325275521
BaseRepresentation
bin10000100101011…
…11000101110000
3100200210111101100
420102233011300
5241104113300
621450004400
73306402330
oct1022570560
9320714340
10139129200
1171597911
123a716700
1322a93b92
14146990c0
15c333700
hex84af170

139129200 has 180 divisors, whose sum is σ = 551890768. Its totient is φ = 31795200.

The previous prime is 139129189. The next prime is 139129223. The reversal of 139129200 is 2921931.

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, 22440 + ... + 27960.

Almost surely, 2139129200 is an apocalyptic number.

139129200 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 139129200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (275945384).

139129200 is an abundant number, since it is smaller than the sum of its proper divisors (412761568).

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

139129200 is a wasteful number, since it uses less digits than its factorization.

139129200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5552 (or 5538 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 139129200 is about 11795.3041503812. The cubic root of 139129200 is about 518.1705932262.

The spelling of 139129200 in words is "one hundred thirty-nine million, one hundred twenty-nine thousand, two hundred".