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152028517 = 193378649
BaseRepresentation
bin10010000111111…
…00010101100101
3101121001211220211
421003330111211
5302404403032
623030255421
73524135554
oct1103742545
9347054824
10152028517
11788a8303
1242ab7571
132565c304
1416295d9b
15d530747
hex90fc565

152028517 has 4 divisors (see below), whose sum is σ = 152109100. Its totient is φ = 151947936.

The previous prime is 152028509. The next prime is 152028563. The reversal of 152028517 is 715820251.

152028517 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 715820251 = 2251318001.

It can be written as a sum of positive squares in 2 ways, for example, as 70324996 + 81703521 = 8386^2 + 9039^2 .

It is a cyclic number.

It is not a de Polignac number, because 152028517 - 23 = 152028509 is a prime.

It is a super-2 number, since 2×1520285172 = 46225339962438578, 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 (152023517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37392 + ... + 41257.

It is an arithmetic number, because the mean of its divisors is an integer number (38027275).

Almost surely, 2152028517 is an apocalyptic number.

It is an amenable number.

152028517 is a deficient number, since it is larger than the sum of its proper divisors (80583).

152028517 is an equidigital number, since it uses as much as digits as its factorization.

152028517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80582.

The product of its (nonzero) digits is 5600, while the sum is 31.

The square root of 152028517 is about 12329.9844687656. The cubic root of 152028517 is about 533.7137025740.

Adding to 152028517 its reverse (715820251), we get a palindrome (867848768).

The spelling of 152028517 in words is "one hundred fifty-two million, twenty-eight thousand, five hundred seventeen".

Divisors: 1 1933 78649 152028517