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13800478 = 240916871
BaseRepresentation
bin110100101001…
…010000011110
3221222010200211
4310221100132
512013103403
61211443034
7225205426
oct64512036
927863624
1013800478
11787655a
12475647a
132b22683
141b93486
15132906d
hexd2941e

13800478 has 8 divisors (see below), whose sum is σ = 20752560. Its totient is φ = 6882960.

The previous prime is 13800473. The next prime is 13800497. The reversal of 13800478 is 87400831.

It is a happy number.

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 (13800473) 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 3 ways as a sum of consecutive naturals, for example, 7618 + ... + 9253.

It is an arithmetic number, because the mean of its divisors is an integer number (2594070).

Almost surely, 213800478 is an apocalyptic number.

13800478 is a deficient number, since it is larger than the sum of its proper divisors (6952082).

13800478 is a wasteful number, since it uses less digits than its factorization.

13800478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17282.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 13800478 is about 3714.8994602815. The cubic root of 13800478 is about 239.8638000360.

The spelling of 13800478 in words is "thirteen million, eight hundred thousand, four hundred seventy-eight".

Divisors: 1 2 409 818 16871 33742 6900239 13800478