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136288740 = 22357324497
BaseRepresentation
bin10000001111110…
…01100111100100
3100111110012000010
420013321213210
5234342214430
621305050220
73243302160
oct1007714744
9314405003
10136288740
116aa27825
1239786970
132230b033
1414159ca0
15be71cb0
hex81f99e4

136288740 has 48 divisors (see below), whose sum is σ = 436125312. Its totient is φ = 31151616.

The previous prime is 136288727. The next prime is 136288751. The reversal of 136288740 is 47882631.

136288740 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 161829 + ... + 162668.

It is an arithmetic number, because the mean of its divisors is an integer number (9085944).

Almost surely, 2136288740 is an apocalyptic number.

136288740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136288740 is an abundant number, since it is smaller than the sum of its proper divisors (299836572).

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

136288740 is a wasteful number, since it uses less digits than its factorization.

136288740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324516 (or 324514 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 136288740 is about 11674.2768512658. The cubic root of 136288740 is about 514.6199980577.

The spelling of 136288740 in words is "one hundred thirty-six million, two hundred eighty-eight thousand, seven hundred forty".

Divisors: 1 2 3 4 5 6 7 10 12 14 15 20 21 28 30 35 42 60 70 84 105 140 210 420 324497 648994 973491 1297988 1622485 1946982 2271479 3244970 3893964 4542958 4867455 6489940 6814437 9085916 9734910 11357395 13628874 19469820 22714790 27257748 34072185 45429580 68144370 136288740