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145287166 = 2443163981
BaseRepresentation
bin10001010100011…
…10011111111110
3101010101100112011
420222032133332
5244143142131
622230001434
73412630513
oct1052163776
9333340464
10145287166
1175013442
12407a627a
132413ba4b
141541d30a
15cb4d0b1
hex8a8e7fe

145287166 has 8 divisors (see below), whose sum is σ = 218424024. Its totient is φ = 72479160.

The previous prime is 145287143. The next prime is 145287193. The reversal of 145287166 is 661782541.

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

It is a super-2 number, since 2×1452871662 = 42216721208623112, which contains 22 as substring.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 81105 + ... + 82876.

It is an arithmetic number, because the mean of its divisors is an integer number (27303003).

Almost surely, 2145287166 is an apocalyptic number.

145287166 is a deficient number, since it is larger than the sum of its proper divisors (73136858).

145287166 is a wasteful number, since it uses less digits than its factorization.

145287166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164426.

The product of its digits is 80640, while the sum is 40.

The square root of 145287166 is about 12053.5126000681. The cubic root of 145287166 is about 525.7053750585.

The spelling of 145287166 in words is "one hundred forty-five million, two hundred eighty-seven thousand, one hundred sixty-six".

Divisors: 1 2 443 886 163981 327962 72643583 145287166