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137278580 = 22510976257
BaseRepresentation
bin10000010111010…
…11010001110100
3100120022110210212
420023223101310
5240120403310
621342204552
73254564045
oct1013532164
9316273725
10137278580
117054347a
1239b83758
132259673a
14143368cc
15c0ba205
hex82eb474

137278580 has 24 divisors (see below), whose sum is σ = 288593928. Its totient is φ = 54852608.

The previous prime is 137278579. The next prime is 137278613. The reversal of 137278580 is 85872731.

137278580 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 37797904 + 99480676 = 6148^2 + 9974^2 .

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 7 ways as a sum of consecutive naturals, for example, 18812 + ... + 25068.

It is an arithmetic number, because the mean of its divisors is an integer number (12024747).

Almost surely, 2137278580 is an apocalyptic number.

137278580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

137278580 is an abundant number, since it is smaller than the sum of its proper divisors (151315348).

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

137278580 is a wasteful number, since it uses less digits than its factorization.

137278580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7363 (or 7361 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 41.

The square root of 137278580 is about 11716.5942150439. The cubic root of 137278580 is about 515.8628574100.

The spelling of 137278580 in words is "one hundred thirty-seven million, two hundred seventy-eight thousand, five hundred eighty".

Divisors: 1 2 4 5 10 20 1097 2194 4388 5485 6257 10970 12514 21940 25028 31285 62570 125140 6863929 13727858 27455716 34319645 68639290 137278580