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13214730 = 2351393169
BaseRepresentation
bin110010011010…
…010000001010
3220212101012110
4302122100022
511340332410
61151123150
7220215624
oct62322012
926771173
1013214730
117506471
1245134b6
132978b89
141a7dc14
151260720
hexc9a40a

13214730 has 32 divisors (see below), whose sum is σ = 31953600. Its totient is φ = 3497472.

The previous prime is 13214723. The next prime is 13214737. The reversal of 13214730 is 3741231.

It is an interprime number because it is at equal distance from previous prime (13214723) and next prime (13214737).

It is a junction number, because it is equal to n+sod(n) for n = 13214697 and 13214706.

It is not an unprimeable number, because it can be changed into a prime (13214737) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2586 + ... + 5754.

It is an arithmetic number, because the mean of its divisors is an integer number (998550).

Almost surely, 213214730 is an apocalyptic number.

13214730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13214730 is an abundant number, since it is smaller than the sum of its proper divisors (18738870).

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

13214730 is a wasteful number, since it uses less digits than its factorization.

13214730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3318.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 13214730 is about 3635.2070092362. The cubic root of 13214730 is about 236.4210261846.

Adding to 13214730 its reverse (3741231), we get a palindrome (16955961).

The spelling of 13214730 in words is "thirteen million, two hundred fourteen thousand, seven hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 139 278 417 695 834 1390 2085 3169 4170 6338 9507 15845 19014 31690 47535 95070 440491 880982 1321473 2202455 2642946 4404910 6607365 13214730