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149786806 = 21328320357
BaseRepresentation
bin10001110110110…
…01000010110110
3101102211221212111
420323121002312
5301321134211
622510241234
73466111141
oct1073310266
9342757774
10149786806
1177607054
12421b621a
1325055b60
1415c71058
15d23b421
hex8ed90b6

149786806 has 16 divisors (see below), whose sum is σ = 242830224. Its totient is φ = 68884704.

The previous prime is 149786789. The next prime is 149786807. The reversal of 149786806 is 608687941.

149786806 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 149786806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149786807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2821 + ... + 17536.

It is an arithmetic number, because the mean of its divisors is an integer number (15176889).

Almost surely, 2149786806 is an apocalyptic number.

149786806 is a deficient number, since it is larger than the sum of its proper divisors (93043418).

149786806 is a wasteful number, since it uses less digits than its factorization.

149786806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20655.

The product of its (nonzero) digits is 580608, while the sum is 49.

The square root of 149786806 is about 12238.7420105173. The cubic root of 149786806 is about 531.0774403154.

The spelling of 149786806 in words is "one hundred forty-nine million, seven hundred eighty-six thousand, eight hundred six".

Divisors: 1 2 13 26 283 566 3679 7358 20357 40714 264641 529282 5761031 11522062 74893403 149786806