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145434415 = 574155269
BaseRepresentation
bin10001010101100…
…10011100101111
3101010122211111211
420222302130233
5244212400130
622233055251
73414113020
oct1052623457
9333584454
10145434415
1175104035
1240857527
1324190a89
141545ac47
15cb7ba2a
hex8ab272f

145434415 has 8 divisors (see below), whose sum is σ = 199452960. Its totient is φ = 99726432.

The previous prime is 145434413. The next prime is 145434427. The reversal of 145434415 is 514434541.

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 145434415 - 21 = 145434413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145434413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2077600 + ... + 2077669.

It is an arithmetic number, because the mean of its divisors is an integer number (24931620).

Almost surely, 2145434415 is an apocalyptic number.

145434415 is a deficient number, since it is larger than the sum of its proper divisors (54018545).

145434415 is an equidigital number, since it uses as much as digits as its factorization.

145434415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4155281.

The product of its digits is 19200, while the sum is 31.

The square root of 145434415 is about 12059.6191896759. The cubic root of 145434415 is about 525.8829164432.

Adding to 145434415 its reverse (514434541), we get a palindrome (659868956).

The spelling of 145434415 in words is "one hundred forty-five million, four hundred thirty-four thousand, four hundred fifteen".

Divisors: 1 5 7 35 4155269 20776345 29086883 145434415