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149830986 = 2324971831
BaseRepresentation
bin10001110111000…
…11110101001010
3101102221012110210
420323203311022
5301324042421
622511221550
73466354014
oct1073436512
9342835423
10149830986
1177637268
12422178b6
132506ccb6
1415c831b4
15d249576
hex8ee3d4a

149830986 has 8 divisors (see below), whose sum is σ = 299661984. Its totient is φ = 49943660.

The previous prime is 149830981. The next prime is 149830987. The reversal of 149830986 is 689038941.

It is a sphenic number, since it is the product of 3 distinct primes.

149830986 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (149830981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12485910 + ... + 12485921.

It is an arithmetic number, because the mean of its divisors is an integer number (37457748).

Almost surely, 2149830986 is an apocalyptic number.

149830986 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

149830986 is a wasteful number, since it uses less digits than its factorization.

149830986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24971836.

The product of its (nonzero) digits is 373248, while the sum is 48.

The square root of 149830986 is about 12240.5468015118. The cubic root of 149830986 is about 531.1296493973.

The spelling of 149830986 in words is "one hundred forty-nine million, eight hundred thirty thousand, nine hundred eighty-six".

Divisors: 1 2 3 6 24971831 49943662 74915493 149830986