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152708069 = 891715821
BaseRepresentation
bin10010001101000…
…10001111100101
3101122100101002102
421012202033211
5303043124234
623053021445
73532666013
oct1106421745
9348311072
10152708069
1179221918
1243184885
1325839707
14163d18b3
15d616c7e
hex91a23e5

152708069 has 4 divisors (see below), whose sum is σ = 154423980. Its totient is φ = 150992160.

The previous prime is 152708053. The next prime is 152708081. The reversal of 152708069 is 960807251.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 960807251 = 6431494257.

It can be written as a sum of positive squares in 2 ways, for example, as 41152225 + 111555844 = 6415^2 + 10562^2 .

It is a cyclic number.

It is not a de Polignac number, because 152708069 - 24 = 152708053 is a prime.

It is a super-2 number, since 2×1527080692 = 46639508675417522, 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 (152701069) 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 3 ways as a sum of consecutive naturals, for example, 857822 + ... + 857999.

It is an arithmetic number, because the mean of its divisors is an integer number (38605995).

Almost surely, 2152708069 is an apocalyptic number.

It is an amenable number.

152708069 is a deficient number, since it is larger than the sum of its proper divisors (1715911).

152708069 is an equidigital number, since it uses as much as digits as its factorization.

152708069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1715910.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 152708069 is about 12357.5106311911. The cubic root of 152708069 is about 534.5077359763.

The spelling of 152708069 in words is "one hundred fifty-two million, seven hundred eight thousand, sixty-nine".

Divisors: 1 89 1715821 152708069