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149286 = 23139179
BaseRepresentation
bin100100011100100110
321120210010
4210130212
514234121
63111050
71161144
oct443446
9246703
10149286
11a2185
1272486
1352c47
143c594
152e376
hex24726

149286 has 16 divisors (see below), whose sum is σ = 302400. Its totient is φ = 49128.

The previous prime is 149269. The next prime is 149287. The reversal of 149286 is 682941.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149287) by changing a digit.

149286 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 745 + ... + 923.

It is an arithmetic number, because the mean of its divisors is an integer number (18900).

2149286 is an apocalyptic number.

149286 is an abundant number, since it is smaller than the sum of its proper divisors (153114).

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

149286 is a wasteful number, since it uses less digits than its factorization.

149286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323.

The product of its digits is 3456, while the sum is 30.

The square root of 149286 is about 386.3754650596. The cubic root of 149286 is about 53.0484900950.

It can be divided in two parts, 149 and 286, that added together give a triangular number (435 = T29).

The spelling of 149286 in words is "one hundred forty-nine thousand, two hundred eighty-six".

Divisors: 1 2 3 6 139 179 278 358 417 537 834 1074 24881 49762 74643 149286