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149907930 = 23528317657
BaseRepresentation
bin10001110111101…
…10100111011010
3101110002010000120
420323312213122
5301334023210
622513014110
73500124234
oct1073664732
9343063016
10149907930
117768a057
1242254336
1325099023
1415ca3254
15d262270
hex8ef69da

149907930 has 32 divisors (see below), whose sum is σ = 361070784. Its totient is φ = 39831936.

The previous prime is 149907917. The next prime is 149907941. The reversal of 149907930 is 39709941.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 339 + ... + 17318.

It is an arithmetic number, because the mean of its divisors is an integer number (11283462).

Almost surely, 2149907930 is an apocalyptic number.

149907930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

149907930 is an abundant number, since it is smaller than the sum of its proper divisors (211162854).

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

149907930 is a wasteful number, since it uses less digits than its factorization.

149907930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17950.

The product of its (nonzero) digits is 61236, while the sum is 42.

The square root of 149907930 is about 12243.6893949495. The cubic root of 149907930 is about 531.2205523700.

The spelling of 149907930 in words is "one hundred forty-nine million, nine hundred seven thousand, nine hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 283 566 849 1415 1698 2830 4245 8490 17657 35314 52971 88285 105942 176570 264855 529710 4996931 9993862 14990793 24984655 29981586 49969310 74953965 149907930