Search a number
-
+
97644043 = 713949149
BaseRepresentation
bin1011101000111…
…10111000001011
320210201211110001
411310132320023
5144444102133
613404503431
72263650340
oct564367013
9223654401
1097644043
1150132462
122884ab77
13172ca353
14cd7a7c7
15888b87d
hex5d1ee0b

97644043 has 4 divisors (see below), whose sum is σ = 111593200. Its totient is φ = 83694888.

The previous prime is 97644037. The next prime is 97644047. The reversal of 97644043 is 34044679.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34044679 = 47937103.

It is a cyclic number.

It is not a de Polignac number, because 97644043 - 25 = 97644011 is a prime.

It is the 9882-nd Hogben number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 97643993 and 97644011.

It is not an unprimeable number, because it can be changed into a prime (97644047) by changing a digit.

It is a nontrivial repunit in base 9881.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6974568 + ... + 6974581.

It is an arithmetic number, because the mean of its divisors is an integer number (27898300).

Almost surely, 297644043 is an apocalyptic number.

97644043 is a deficient number, since it is larger than the sum of its proper divisors (13949157).

97644043 is a wasteful number, since it uses less digits than its factorization.

97644043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13949156.

The product of its (nonzero) digits is 72576, while the sum is 37.

The square root of 97644043 is about 9881.5000379497. The cubic root of 97644043 is about 460.4847489156.

The spelling of 97644043 in words is "ninety-seven million, six hundred forty-four thousand, forty-three".

Divisors: 1 7 13949149 97644043