Search a number
-
+
13020293 = 1113831097
BaseRepresentation
bin110001101010…
…110010000101
3220111111111002
4301222302011
511313122133
61143023045
7215446016
oct61526205
926444432
1013020293
117393380
12443aa85
13290b520
141a2d00d
151222ce8
hexc6ac85

13020293 has 16 divisors (see below), whose sum is σ = 15494976. Its totient is φ = 10784640.

The previous prime is 13020251. The next prime is 13020307. The reversal of 13020293 is 39202031.

It is a cyclic number.

It is not a de Polignac number, because 13020293 - 26 = 13020229 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 (13020223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11321 + ... + 12417.

It is an arithmetic number, because the mean of its divisors is an integer number (968436).

Almost surely, 213020293 is an apocalyptic number.

13020293 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

13020293 is a deficient number, since it is larger than the sum of its proper divisors (2474683).

13020293 is a wasteful number, since it uses less digits than its factorization.

13020293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1204.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 13020293 is about 3608.3643108755. The cubic root of 13020293 is about 235.2557529472.

The spelling of 13020293 in words is "thirteen million, twenty thousand, two hundred ninety-three".

Divisors: 1 11 13 83 143 913 1079 1097 11869 12067 14261 91051 156871 1001561 1183663 13020293