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152169907 = 178951171
BaseRepresentation
bin10010001000111…
…10110110110011
3101121100000212111
421010132312303
5302423414112
623033310151
73525265021
oct1104366663
9347300774
10152169907
117899455a
1242b65357
13256ab786
14162d1711
15d55c5a7
hex911edb3

152169907 has 4 divisors (see below), whose sum is σ = 161121096. Its totient is φ = 143218720.

The previous prime is 152169889. The next prime is 152169911. The reversal of 152169907 is 709961251.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 709961251 = 2832508697.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-152169907 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 152169907.

It is not an unprimeable number, because it can be changed into a prime (152169977) 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, 4475569 + ... + 4475602.

It is an arithmetic number, because the mean of its divisors is an integer number (40280274).

Almost surely, 2152169907 is an apocalyptic number.

152169907 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

152169907 is a deficient number, since it is larger than the sum of its proper divisors (8951189).

152169907 is an equidigital number, since it uses as much as digits as its factorization.

152169907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8951188.

The product of its (nonzero) digits is 34020, while the sum is 40.

The square root of 152169907 is about 12335.7167201586. The cubic root of 152169907 is about 533.8791066273.

The spelling of 152169907 in words is "one hundred fifty-two million, one hundred sixty-nine thousand, nine hundred seven".

Divisors: 1 17 8951171 152169907