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149713291 = 7133173727
BaseRepresentation
bin10001110110001…
…11000110001011
3101102201020000201
420323013012023
5301311311131
622504513031
73465353620
oct1073070613
9342636021
10149713291
11775668a2
124217b777
132502b560
1415c52347
15d224761
hex8ec718b

149713291 has 32 divisors (see below), whose sum is σ = 193077248. Its totient is φ = 112907520.

The previous prime is 149713253. The next prime is 149713313. The reversal of 149713291 is 192317941.

149713291 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 149713291 - 27 = 149713163 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 149713291.

It is not an unprimeable number, because it can be changed into a prime (149713231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 205570 + ... + 206296.

It is an arithmetic number, because the mean of its divisors is an integer number (6033664).

Almost surely, 2149713291 is an apocalyptic number.

149713291 is a deficient number, since it is larger than the sum of its proper divisors (43363957).

149713291 is a wasteful number, since it uses less digits than its factorization.

149713291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851.

The product of its digits is 13608, while the sum is 37.

The square root of 149713291 is about 12235.7382695120. The cubic root of 149713291 is about 530.9905422588.

The spelling of 149713291 in words is "one hundred forty-nine million, seven hundred thirteen thousand, two hundred ninety-one".

Divisors: 1 7 13 31 73 91 217 403 511 727 949 2263 2821 5089 6643 9451 15841 22537 29419 53071 66157 157759 205933 292981 371497 689923 1645201 2050867 4829461 11516407 21387613 149713291