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145410293 = 7213721661
BaseRepresentation
bin10001010101011…
…00100011110101
3101010121121102102
420222230203311
5244211112133
622232351445
73413652500
oct1052544365
9333547372
10145410293
11750979a6
1240845585
1324182ac2
1415452137
15cb747e8
hex8aac8f5

145410293 has 12 divisors (see below), whose sum is σ = 170393292. Its totient is φ = 123721920.

The previous prime is 145410277. The next prime is 145410329. The reversal of 145410293 is 392014541.

145410293 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 65254084 + 80156209 = 8078^2 + 8953^2 .

It is not a de Polignac number, because 145410293 - 24 = 145410277 is a prime.

It is a super-2 number, since 2×1454102932 = 42288306620691698, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145410203) 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, 4118 + ... + 17543.

It is an arithmetic number, because the mean of its divisors is an integer number (14199441).

Almost surely, 2145410293 is an apocalyptic number.

It is an amenable number.

145410293 is a deficient number, since it is larger than the sum of its proper divisors (24982999).

145410293 is a wasteful number, since it uses less digits than its factorization.

145410293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21812 (or 21805 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 145410293 is about 12058.6190337037. The cubic root of 145410293 is about 525.8538402232.

The spelling of 145410293 in words is "one hundred forty-five million, four hundred ten thousand, two hundred ninety-three".

Divisors: 1 7 49 137 959 6713 21661 151627 1061389 2967557 20772899 145410293