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149937980 = 2257496899
BaseRepresentation
bin10001110111111…
…01111100111100
3101110010122020112
420323331330330
5301341003410
622513405152
73500310653
oct1073757474
9343118215
10149937980
11776aa695
12422697b8
13250a98ca
1415cb019a
15d26b105
hex8efdf3c

149937980 has 12 divisors (see below), whose sum is σ = 314869800. Its totient is φ = 59975184.

The previous prime is 149937967. The next prime is 149938003. The reversal of 149937980 is 89739941.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3748430 + ... + 3748469.

It is an arithmetic number, because the mean of its divisors is an integer number (26239150).

Almost surely, 2149937980 is an apocalyptic number.

149937980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

149937980 is an abundant number, since it is smaller than the sum of its proper divisors (164931820).

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

149937980 is a wasteful number, since it uses less digits than its factorization.

149937980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7496908 (or 7496906 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 50.

The square root of 149937980 is about 12244.9164962445. The cubic root of 149937980 is about 531.2560455137.

The spelling of 149937980 in words is "one hundred forty-nine million, nine hundred thirty-seven thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 7496899 14993798 29987596 37484495 74968990 149937980