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145207379 = 2931161521
BaseRepresentation
bin10001010011110…
…11000001010011
3101010020022002002
420221323001103
5244133114004
622224144215
73412146062
oct1051730123
9333208062
10145207379
1174a694a9
124076806b
1324111635
14153dc1d9
15cb3461e
hex8a7b053

145207379 has 8 divisors (see below), whose sum is σ = 155061120. Its totient is φ = 135676800.

The previous prime is 145207339. The next prime is 145207417. The reversal of 145207379 is 973702541.

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

It is a cyclic number.

It is not a de Polignac number, because 145207379 - 28 = 145207123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145207339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79862 + ... + 81659.

It is an arithmetic number, because the mean of its divisors is an integer number (19382640).

Almost surely, 2145207379 is an apocalyptic number.

145207379 is a deficient number, since it is larger than the sum of its proper divisors (9853741).

145207379 is a wasteful number, since it uses less digits than its factorization.

145207379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161581.

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 145207379 is about 12050.2024464322. The cubic root of 145207379 is about 525.6091239892.

The spelling of 145207379 in words is "one hundred forty-five million, two hundred seven thousand, three hundred seventy-nine".

Divisors: 1 29 31 899 161521 4684109 5007151 145207379