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145102847 = 3123320089
BaseRepresentation
bin10001010011000…
…01011111111111
3101010000222200112
420221201133333
5244121242342
622222020235
73411232241
oct1051413777
9333028615
10145102847
11749a7a0a
124071767b
13240a5b96
14153b2091
15cb13682
hex8a617ff

145102847 has 8 divisors (see below), whose sum is σ = 150433920. Its totient is φ = 139812480.

The previous prime is 145102843. The next prime is 145102861. The reversal of 145102847 is 748201541.

It is a happy number.

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

It is not a de Polignac number, because 145102847 - 22 = 145102843 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145102843) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2822 + ... + 17267.

It is an arithmetic number, because the mean of its divisors is an integer number (18804240).

Almost surely, 2145102847 is an apocalyptic number.

145102847 is a deficient number, since it is larger than the sum of its proper divisors (5331073).

145102847 is a wasteful number, since it uses less digits than its factorization.

145102847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20353.

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 145102847 is about 12045.8643110405. The cubic root of 145102847 is about 525.4829684115.

The spelling of 145102847 in words is "one hundred forty-five million, one hundred two thousand, eight hundred forty-seven".

Divisors: 1 31 233 7223 20089 622759 4680737 145102847