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13253990 = 251325399
BaseRepresentation
bin110010100011…
…110101100110
3220221101001112
4302203311212
511343111430
61152025022
7220441241
oct62436546
926841045
1013253990
117532a12
124532172
1329909c9
141a90258
15126c195
hexca3d66

13253990 has 8 divisors (see below), whose sum is σ = 23857200. Its totient is φ = 5301592.

The previous prime is 13253987. The next prime is 13253993. The reversal of 13253990 is 9935231.

It is an interprime number because it is at equal distance from previous prime (13253987) and next prime (13253993).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13253993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 662690 + ... + 662709.

It is an arithmetic number, because the mean of its divisors is an integer number (2982150).

Almost surely, 213253990 is an apocalyptic number.

13253990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13253990 is a deficient number, since it is larger than the sum of its proper divisors (10603210).

13253990 is a wasteful number, since it uses less digits than its factorization.

13253990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1325406.

The product of its (nonzero) digits is 7290, while the sum is 32.

The square root of 13253990 is about 3640.6029720364. The cubic root of 13253990 is about 236.6549245866.

The spelling of 13253990 in words is "thirteen million, two hundred fifty-three thousand, nine hundred ninety".

Divisors: 1 2 5 10 1325399 2650798 6626995 13253990