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13489430 = 251970997
BaseRepresentation
bin110011011101…
…010100010110
3221101100000112
4303131110112
511423130210
61201043022
7222441533
oct63352426
927340015
1013489430
117683899
124626472
132a43c16
141b11d8a
1512b6d05
hexcdd516

13489430 has 16 divisors (see below), whose sum is σ = 25559280. Its totient is φ = 5111712.

The previous prime is 13489429. The next prime is 13489481. The reversal of 13489430 is 3498431.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 35309 + ... + 35688.

It is an arithmetic number, because the mean of its divisors is an integer number (1597455).

Almost surely, 213489430 is an apocalyptic number.

13489430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13489430 is a deficient number, since it is larger than the sum of its proper divisors (12069850).

13489430 is a wasteful number, since it uses less digits than its factorization.

13489430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71023.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 13489430 is about 3672.7959377020. The cubic root of 13489430 is about 238.0479977579.

Subtracting from 13489430 its reverse (3498431), we obtain a palindrome (9990999).

The spelling of 13489430 in words is "thirteen million, four hundred eighty-nine thousand, four hundred thirty".

Divisors: 1 2 5 10 19 38 95 190 70997 141994 354985 709970 1348943 2697886 6744715 13489430