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149012680 = 2355370289
BaseRepresentation
bin10001110000111…
…00000011001000
3101101101121222011
420320130003020
5301121401210
622441505304
73456405205
oct1070340310
9341347864
10149012680
1177128483
1241aa2234
1324b446ab
1415b0ccac
15d136d8a
hex8e1c0c8

149012680 has 32 divisors (see below), whose sum is σ = 341609400. Its totient is φ = 58479616.

The previous prime is 149012671. The next prime is 149012681. The reversal of 149012680 is 86210941.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 148986436 + 26244 = 12206^2 + 162^2 .

It is not an unprimeable number, because it can be changed into a prime (149012681) 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, 33025 + ... + 37264.

Almost surely, 2149012680 is an apocalyptic number.

149012680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

149012680 is an abundant number, since it is smaller than the sum of its proper divisors (192596720).

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

149012680 is a wasteful number, since it uses less digits than its factorization.

149012680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70353 (or 70349 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 149012680 is about 12207.0749977216. The cubic root of 149012680 is about 530.1609574027.

The spelling of 149012680 in words is "one hundred forty-nine million, twelve thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 53 106 212 265 424 530 1060 2120 70289 140578 281156 351445 562312 702890 1405780 2811560 3725317 7450634 14901268 18626585 29802536 37253170 74506340 149012680