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145388679 = 3451710729
BaseRepresentation
bin10001010101001…
…11010010000111
3101010120111202220
420222213102013
5244204414204
622232103423
73413532462
oct1052472207
9333514686
10145388679
1175082737
1240834b73
1324176007
14154482d9
15cb6d1d9
hex8aa7487

145388679 has 8 divisors (see below), whose sum is σ = 193912560. Its totient is φ = 96895296.

The previous prime is 145388671. The next prime is 145388707. The reversal of 145388679 is 976883541.

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

It is not a de Polignac number, because 145388679 - 23 = 145388671 is a prime.

It is a super-2 number, since 2×1453886792 = 42275735962730082, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145388671) 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, 8187 + ... + 18915.

It is an arithmetic number, because the mean of its divisors is an integer number (24239070).

Almost surely, 2145388679 is an apocalyptic number.

145388679 is a deficient number, since it is larger than the sum of its proper divisors (48523881).

145388679 is a wasteful number, since it uses less digits than its factorization.

145388679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15249.

The product of its digits is 1451520, while the sum is 51.

The square root of 145388679 is about 12057.7227949559. The cubic root of 145388679 is about 525.8277843692.

The spelling of 145388679 in words is "one hundred forty-five million, three hundred eighty-eight thousand, six hundred seventy-nine".

Divisors: 1 3 4517 10729 13551 32187 48462893 145388679