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13490019 = 321978889
BaseRepresentation
bin110011011101…
…011101100011
3221101100211100
4303131131203
511423140034
61201045443
7222443334
oct63353543
927340740
1013490019
117684284
124626883
132a4427a
141b1228b
1512b7099
hexcdd763

13490019 has 12 divisors (see below), whose sum is σ = 20511400. Its totient is φ = 8519904.

The previous prime is 13489963. The next prime is 13490023. The reversal of 13490019 is 91009431.

It is not a de Polignac number, because 13490019 - 213 = 13481827 is a prime.

It is a super-2 number, since 2×134900192 = 363961225240722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13489974 and 13490001.

It is not an unprimeable number, because it can be changed into a prime (13490039) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39274 + ... + 39615.

Almost surely, 213490019 is an apocalyptic number.

13490019 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

13490019 is a deficient number, since it is larger than the sum of its proper divisors (7021381).

13490019 is a wasteful number, since it uses less digits than its factorization.

13490019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78914 (or 78911 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 13490019 is about 3672.8761209711. The cubic root of 13490019 is about 238.0514624021.

The spelling of 13490019 in words is "thirteen million, four hundred ninety thousand, nineteen".

Divisors: 1 3 9 19 57 171 78889 236667 710001 1498891 4496673 13490019