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139179700 = 225211294363
BaseRepresentation
bin10000100101110…
…11011010110100
3100200220001122201
420102323122310
5241112222300
621451034244
73310002502
oct1022733264
9320801581
10139179700
1171621850
123a73b984
1322ab0b6a
15c34366a
hex84bb6b4

139179700 has 72 divisors (see below), whose sum is σ = 340915680. Its totient is φ = 48854400.

The previous prime is 139179659. The next prime is 139179701. The reversal of 139179700 is 7971931.

139179700 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 139179700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139179701) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29719 + ... + 34081.

It is an arithmetic number, because the mean of its divisors is an integer number (4734940).

Almost surely, 2139179700 is an apocalyptic number.

139179700 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 139179700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170457840).

139179700 is an abundant number, since it is smaller than the sum of its proper divisors (201735980).

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

139179700 is a wasteful number, since it uses less digits than its factorization.

139179700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4417 (or 4410 counting only the distinct ones).

The product of its (nonzero) digits is 11907, while the sum is 37.

The square root of 139179700 is about 11797.4446385647. Note that the first 3 decimals coincide. The cubic root of 139179700 is about 518.2332794429.

The spelling of 139179700 in words is "one hundred thirty-nine million, one hundred seventy-nine thousand, seven hundred".