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13980383 = 31144953
BaseRepresentation
bin110101010101…
…001011011111
3222022021110222
4311111023133
512034333013
61215351555
7226555064
oct65251337
928267428
1013980383
11798973a
1248225bb
132b86521
141bdcc6b
151362508
hexd552df

13980383 has 4 divisors (see below), whose sum is σ = 14025648. Its totient is φ = 13935120.

The previous prime is 13980377. The next prime is 13980391. The reversal of 13980383 is 38308931.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13980383 - 24 = 13980367 is a prime.

It is a super-2 number, since 2×139803832 = 390902217653378, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13980353) 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, 22166 + ... + 22787.

It is an arithmetic number, because the mean of its divisors is an integer number (3506412).

Almost surely, 213980383 is an apocalyptic number.

13980383 is a deficient number, since it is larger than the sum of its proper divisors (45265).

13980383 is an equidigital number, since it uses as much as digits as its factorization.

13980383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45264.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 13980383 is about 3739.0350359418. The cubic root of 13980383 is about 240.9016029389.

The spelling of 13980383 in words is "thirteen million, nine hundred eighty thousand, three hundred eighty-three".

Divisors: 1 311 44953 13980383