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145026244 = 221121092749
BaseRepresentation
bin10001010010011…
…10110011000100
3101002220002121101
420221032303010
5244111314434
622220225444
73410463016
oct1051166304
9332802541
10145026244
1174955400
124069b284
132407a05c
14153921b6
15caeab14
hex8a4ecc4

145026244 has 36 divisors (see below), whose sum is σ = 281627500. Its totient is φ = 65292480.

The previous prime is 145026241. The next prime is 145026281. The reversal of 145026244 is 442620541.

It can be written as a sum of positive squares in 2 ways, for example, as 55950400 + 89075844 = 7480^2 + 9438^2 .

It is a super-2 number, since 2×1450262442 = 42065222897495072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145026241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51382 + ... + 54130.

Almost surely, 2145026244 is an apocalyptic number.

It is an amenable number.

145026244 is a deficient number, since it is larger than the sum of its proper divisors (136601256).

145026244 is a wasteful number, since it uses less digits than its factorization.

145026244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2884 (or 2871 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 145026244 is about 12042.6842522753. The cubic root of 145026244 is about 525.3904807764.

Adding to 145026244 its reverse (442620541), we get a palindrome (587646785).

The spelling of 145026244 in words is "one hundred forty-five million, twenty-six thousand, two hundred forty-four".

Divisors: 1 2 4 11 22 44 109 121 218 242 436 484 1199 2398 2749 4796 5498 10996 13189 26378 30239 52756 60478 120956 299641 332629 599282 665258 1198564 1330516 3296051 6592102 13184204 36256561 72513122 145026244