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13001995 = 53497451
BaseRepresentation
bin110001100110…
…010100001011
3220110120101101
4301212110023
511312030440
61142402231
7215341456
oct61462413
926416341
1013001995
117380656
124430377
1329030b6
141a2649d
15121c69a
hexc6650b

13001995 has 8 divisors (see below), whose sum is σ = 15649200. Its totient is φ = 10370400.

The previous prime is 13001993. The next prime is 13002019. The reversal of 13001995 is 59910031.

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

It is not a de Polignac number, because 13001995 - 21 = 13001993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13001993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1981 + ... + 5470.

It is an arithmetic number, because the mean of its divisors is an integer number (1956150).

Almost surely, 213001995 is an apocalyptic number.

13001995 is a deficient number, since it is larger than the sum of its proper divisors (2647205).

13001995 is an equidigital number, since it uses as much as digits as its factorization.

13001995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7805.

The product of its (nonzero) digits is 1215, while the sum is 28.

The square root of 13001995 is about 3605.8279215736. The cubic root of 13001995 is about 235.1454961381.

The spelling of 13001995 in words is "thirteen million, one thousand, nine hundred ninety-five".

Divisors: 1 5 349 1745 7451 37255 2600399 13001995