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30196469 = 31795257
BaseRepresentation
bin111001100110…
…0001011110101
32002211010202202
41303030023311
530212241334
62555114245
7514444232
oct163141365
962733682
1030196469
1116055066
12a142985
136343544
144020789
1529b717e
hex1ccc2f5

30196469 has 4 divisors (see below), whose sum is σ = 30292044. Its totient is φ = 30100896.

The previous prime is 30196423. The next prime is 30196487. The reversal of 30196469 is 96469103.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96469103 = 376725609.

It can be written as a sum of positive squares in 2 ways, for example, as 1787569 + 28408900 = 1337^2 + 5330^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-30196469 is a prime.

It is a super-2 number, since 2×301964692 = 1823653480135922, 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 (30192469) 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, 47312 + ... + 47945.

It is an arithmetic number, because the mean of its divisors is an integer number (7573011).

Almost surely, 230196469 is an apocalyptic number.

It is an amenable number.

30196469 is a deficient number, since it is larger than the sum of its proper divisors (95575).

30196469 is an equidigital number, since it uses as much as digits as its factorization.

30196469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95574.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 30196469 is about 5495.1313906039. The cubic root of 30196469 is about 311.4000806298.

The spelling of 30196469 in words is "thirty million, one hundred ninety-six thousand, four hundred sixty-nine".

Divisors: 1 317 95257 30196469