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14980381 = 131152337
BaseRepresentation
bin111001001001…
…010100011101
31001012002012221
4321021110131
512313333011
61253025341
7241221403
oct71112435
931162187
1014980381
118501a89
125025251
133146740
141dbd473
1514ad971
hexe4951d

14980381 has 4 divisors (see below), whose sum is σ = 16132732. Its totient is φ = 13828032.

The previous prime is 14980373. The next prime is 14980393. The reversal of 14980381 is 18308941.

It is a happy number.

14980381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2056356 + 12924025 = 1434^2 + 3595^2 .

It is a cyclic number.

It is not a de Polignac number, because 14980381 - 23 = 14980373 is a prime.

It is a super-2 number, since 2×149803812 = 448823629810322, 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 (14980351) 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, 576156 + ... + 576181.

It is an arithmetic number, because the mean of its divisors is an integer number (4033183).

Almost surely, 214980381 is an apocalyptic number.

It is an amenable number.

14980381 is a deficient number, since it is larger than the sum of its proper divisors (1152351).

14980381 is a wasteful number, since it uses less digits than its factorization.

14980381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1152350.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 14980381 is about 3870.4497154724. The cubic root of 14980381 is about 246.5136391561.

The spelling of 14980381 in words is "fourteen million, nine hundred eighty thousand, three hundred eighty-one".

Divisors: 1 13 1152337 14980381