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92912005 = 518582401
BaseRepresentation
bin1011000100110…
…11100110000101
320110211102022101
411202123212011
5142241141010
613115232101
72205511324
oct542334605
9213742271
1092912005
11484a018a
1227148631
1316331524
14c4a80bb
15825473a
hex589b985

92912005 has 4 divisors (see below), whose sum is σ = 111494412. Its totient is φ = 74329600.

The previous prime is 92912003. The next prime is 92912009. The reversal of 92912005 is 50021929.

92912005 is nontrivially palindromic in base 16.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50021929 = 163306883.

It can be written as a sum of positive squares in 2 ways, for example, as 48902049 + 44009956 = 6993^2 + 6634^2 .

It is not a de Polignac number, because 92912005 - 21 = 92912003 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (92912003) 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, 9291196 + ... + 9291205.

It is an arithmetic number, because the mean of its divisors is an integer number (27873603).

Almost surely, 292912005 is an apocalyptic number.

It is an amenable number.

92912005 is a deficient number, since it is larger than the sum of its proper divisors (18582407).

92912005 is a wasteful number, since it uses less digits than its factorization.

92912005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18582406.

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 92912005 is about 9639.0873530641. The cubic root of 92912005 is about 452.9225502594.

The spelling of 92912005 in words is "ninety-two million, nine hundred twelve thousand, five".

Divisors: 1 5 18582401 92912005