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16072393 = 37434389
BaseRepresentation
bin111101010011…
…111011001001
31010020120011211
4331103323021
513103304033
61332253121
7253420201
oct75237311
933216154
1016072393
119088477
1254711a1
1334397bc
1421c5401
1516272cd
hexf53ec9

16072393 has 4 divisors (see below), whose sum is σ = 16506820. Its totient is φ = 15637968.

The previous prime is 16072387. The next prime is 16072417. The reversal of 16072393 is 39327061.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39327061 = 336111701.

It can be written as a sum of positive squares in 2 ways, for example, as 8277129 + 7795264 = 2877^2 + 2792^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-16072393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16072333) 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, 217158 + ... + 217231.

It is an arithmetic number, because the mean of its divisors is an integer number (4126705).

Almost surely, 216072393 is an apocalyptic number.

It is an amenable number.

16072393 is a deficient number, since it is larger than the sum of its proper divisors (434427).

16072393 is an equidigital number, since it uses as much as digits as its factorization.

16072393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434426.

The product of its (nonzero) digits is 6804, while the sum is 31.

The square root of 16072393 is about 4009.0389122581. The cubic root of 16072393 is about 252.3636776804.

The spelling of 16072393 in words is "sixteen million, seventy-two thousand, three hundred ninety-three".

Divisors: 1 37 434389 16072393