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139199580 = 223351379251
BaseRepresentation
bin10000100110000…
…00010001011100
3100200221001221000
420103000101130
5241113341310
621451310300
73310114452
oct1023002134
9320831830
10139199580
1171635783
123a74b390
1322ab9c20
14146b69d2
15c3494c0
hex84c045c

139199580 has 192 divisors, whose sum is σ = 474163200. Its totient is φ = 33696000.

The previous prime is 139199573. The next prime is 139199581. The reversal of 139199580 is 85991931.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139199581) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 554455 + ... + 554705.

It is an arithmetic number, because the mean of its divisors is an integer number (2469600).

Almost surely, 2139199580 is an apocalyptic number.

139199580 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 139199580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237081600).

139199580 is an abundant number, since it is smaller than the sum of its proper divisors (334963620).

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

139199580 is a wasteful number, since it uses less digits than its factorization.

139199580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361 (or 353 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 45.

The square root of 139199580 is about 11798.2871638217. The cubic root of 139199580 is about 518.2579525504.

The spelling of 139199580 in words is "one hundred thirty-nine million, one hundred ninety-nine thousand, five hundred eighty".