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13021030 = 2511118373
BaseRepresentation
bin110001101010…
…111101100110
3220111112111101
4301222331212
511313133110
61143030314
7215451121
oct61527546
926445441
1013021030
117393990
12443b39a
13290b969
141a2d3b8
15122313a
hexc6af66

13021030 has 16 divisors (see below), whose sum is σ = 25568784. Its totient is φ = 4734880.

The previous prime is 13021027. The next prime is 13021033. The reversal of 13021030 is 3012031.

It is an interprime number because it is at equal distance from previous prime (13021027) and next prime (13021033).

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 13020998 and 13021016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13021033) 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, 59077 + ... + 59296.

It is an arithmetic number, because the mean of its divisors is an integer number (1598049).

Almost surely, 213021030 is an apocalyptic number.

13021030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13021030 is a deficient number, since it is larger than the sum of its proper divisors (12547754).

13021030 is a wasteful number, since it uses less digits than its factorization.

13021030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118391.

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 13021030 is about 3608.4664332650. The cubic root of 13021030 is about 235.2601916650.

Adding to 13021030 its reverse (3012031), we get a palindrome (16033061).

It can be divided in two parts, 1302 and 1030, that added together give a palindrome (2332).

The spelling of 13021030 in words is "thirteen million, twenty-one thousand, thirty".

Divisors: 1 2 5 10 11 22 55 110 118373 236746 591865 1183730 1302103 2604206 6510515 13021030