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139288016 = 2471243643
BaseRepresentation
bin10000100110101…
…01110111010000
3100201002120020102
420103111313100
5241124204031
621453231532
73310633340
oct1023256720
9321076212
10139288016
117169616a
123a7925a8
1322b1b25a
14146dad20
15c3657cb
hex84d5dd0

139288016 has 20 divisors (see below), whose sum is σ = 308423712. Its totient is φ = 59694816.

The previous prime is 139288003. The next prime is 139288067. The reversal of 139288016 is 610882931.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 621710 + ... + 621933.

Almost surely, 2139288016 is an apocalyptic number.

139288016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

139288016 is an abundant number, since it is smaller than the sum of its proper divisors (169135696).

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

139288016 is a wasteful number, since it uses less digits than its factorization.

139288016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1243658 (or 1243652 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 139288016 is about 11802.0344008989. The cubic root of 139288016 is about 518.3676821861.

The spelling of 139288016 in words is "one hundred thirty-nine million, two hundred eighty-eight thousand, sixteen".

Divisors: 1 2 4 7 8 14 16 28 56 112 1243643 2487286 4974572 8705501 9949144 17411002 19898288 34822004 69644008 139288016