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145312414 = 2136783417
BaseRepresentation
bin10001010100101…
…00101010011110
3101010102122011021
420222110222132
5244144444124
622230314354
73413064232
oct1052245236
9333378137
10145312414
1175030405
12407b89ba
132414a3a0
14154285c2
15cb557e4
hex8a94a9e

145312414 has 16 divisors (see below), whose sum is σ = 238241808. Its totient is φ = 66065472.

The previous prime is 145312373. The next prime is 145312423. The reversal of 145312414 is 414213541.

It is a super-2 number, since 2×1453124142 = 42231395325014792, 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 (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39967 + ... + 43450.

It is an arithmetic number, because the mean of its divisors is an integer number (14890113).

Almost surely, 2145312414 is an apocalyptic number.

145312414 is a deficient number, since it is larger than the sum of its proper divisors (92929394).

145312414 is a wasteful number, since it uses less digits than its factorization.

145312414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83499.

The product of its digits is 1920, while the sum is 25.

The square root of 145312414 is about 12054.5598841268. The cubic root of 145312414 is about 525.7358256503.

Adding to 145312414 its reverse (414213541), we get a palindrome (559525955).

The spelling of 145312414 in words is "one hundred forty-five million, three hundred twelve thousand, four hundred fourteen".

Divisors: 1 2 13 26 67 134 871 1742 83417 166834 1084421 2168842 5588939 11177878 72656207 145312414