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13280938 = 211603679
BaseRepresentation
bin110010101010…
…011010101010
3220222202000121
4302222122222
511344442223
61152353454
7220612636
oct62523252
926882017
1013280938
117551190
12454588a
1329a0058
141a99dc6
15127515d
hexcaa6aa

13280938 has 8 divisors (see below), whose sum is σ = 21732480. Its totient is φ = 6036780.

The previous prime is 13280933. The next prime is 13280951. The reversal of 13280938 is 83908231.

13280938 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-4 number, since 4×132809384 (a number of 30 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (13280933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 301818 + ... + 301861.

It is an arithmetic number, because the mean of its divisors is an integer number (2716560).

Almost surely, 213280938 is an apocalyptic number.

13280938 is a deficient number, since it is larger than the sum of its proper divisors (8451542).

13280938 is a wasteful number, since it uses less digits than its factorization.

13280938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603692.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 13280938 is about 3644.3021279801. The cubic root of 13280938 is about 236.8152048651.

The spelling of 13280938 in words is "thirteen million, two hundred eighty thousand, nine hundred thirty-eight".

Divisors: 1 2 11 22 603679 1207358 6640469 13280938