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14972381 = 29895801
BaseRepresentation
bin111001000111…
…010111011101
31001011200020122
4321013113131
512313104011
61252524325
7241156154
oct71072735
931150218
1014972381
1184a6a76
1250206a5
133142bc8
141dba59b
1514ab3db
hexe475dd

14972381 has 8 divisors (see below), whose sum is σ = 15665400. Its totient is φ = 14291200.

The previous prime is 14972369. The next prime is 14972407. The reversal of 14972381 is 18327941.

It can be written as a sum of positive squares in 4 ways, for example, as 4305625 + 10666756 = 2075^2 + 3266^2 .

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

It is not a de Polignac number, because 14972381 - 222 = 10778077 is a prime.

It is a super-2 number, since 2×149723812 = 448344385618322, 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 (14972351) 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, 320 + ... + 5481.

It is an arithmetic number, because the mean of its divisors is an integer number (1958175).

Almost surely, 214972381 is an apocalyptic number.

It is an amenable number.

14972381 is a deficient number, since it is larger than the sum of its proper divisors (693019).

14972381 is an equidigital number, since it uses as much as digits as its factorization.

14972381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5919.

The product of its digits is 12096, while the sum is 35.

The square root of 14972381 is about 3869.4161058227. The cubic root of 14972381 is about 246.4697493005.

The spelling of 14972381 in words is "fourteen million, nine hundred seventy-two thousand, three hundred eighty-one".

Divisors: 1 29 89 2581 5801 168229 516289 14972381