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145310454 = 23231260413
BaseRepresentation
bin10001010100101…
…00001011110110
3101010102112110200
420222110023312
5244144413304
622230301330
73413055432
oct1052241366
9333375420
10145310454
1175029993
12407b7846
1324149523
14154279c2
15cb54e39
hex8a942f6

145310454 has 24 divisors (see below), whose sum is σ = 324996672. Its totient is φ = 46874160.

The previous prime is 145310453. The next prime is 145310483. The reversal of 145310454 is 454013541.

It is a happy number.

It is a super-2 number, since 2×1453104542 = 42230256083372232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145310453) 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 11 ways as a sum of consecutive naturals, for example, 129649 + ... + 130764.

It is an arithmetic number, because the mean of its divisors is an integer number (13541528).

Almost surely, 2145310454 is an apocalyptic number.

145310454 is an abundant number, since it is smaller than the sum of its proper divisors (179686218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145310454 is a wasteful number, since it uses less digits than its factorization.

145310454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260452 (or 260449 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 145310454 is about 12054.4785868158. The cubic root of 145310454 is about 525.7334618998.

Adding to 145310454 its reverse (454013541), we get a palindrome (599323995).

The spelling of 145310454 in words is "one hundred forty-five million, three hundred ten thousand, four hundred fifty-four".

Divisors: 1 2 3 6 9 18 31 62 93 186 279 558 260413 520826 781239 1562478 2343717 4687434 8072803 16145606 24218409 48436818 72655227 145310454