Search a number
-
+
13105380 = 2235218423
BaseRepresentation
bin110001111111…
…100011100100
3220122211012110
4301333203210
511323333010
61144521020
7216252051
oct61774344
926584173
1013105380
1174412a2
124480170
13293b182
141a52028
15123d120
hexc7f8e4

13105380 has 24 divisors (see below), whose sum is σ = 36695232. Its totient is φ = 3494752.

The previous prime is 13105373. The next prime is 13105387. The reversal of 13105380 is 8350131.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13105373) and next prime (13105387).

It is not an unprimeable number, because it can be changed into a prime (13105387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109152 + ... + 109271.

It is an arithmetic number, because the mean of its divisors is an integer number (1528968).

Almost surely, 213105380 is an apocalyptic number.

13105380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13105380 is an abundant number, since it is smaller than the sum of its proper divisors (23589852).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13105380 is a wasteful number, since it uses less digits than its factorization.

13105380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218435 (or 218433 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 13105380 is about 3620.1353565854. The cubic root of 13105380 is about 235.7671024239.

The spelling of 13105380 in words is "thirteen million, one hundred five thousand, three hundred eighty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 218423 436846 655269 873692 1092115 1310538 2184230 2621076 3276345 4368460 6552690 13105380